SPMM mocks Flashcards

1
Q

A 65-year-old man has presented to the clinic with frontal lobe deficits

Identify two clinical features commonly seen in Medial prefrontal syndrome

A

Paucity of spontaneous behaviour and Poverty of speech

Also called apathetic, or pseudo depressive type is featured by a paucity of spontaneous behaviours, sparse verbal output, reduced social knowledge and judgement of harmful intent.

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2
Q

A 65-year-old man has presented to the clinic with frontal lobe deficits

Identify two clinical features commonly seen in Orbitofrontal syndrome

A

Poor impulse control and Explosive outbursts

also called disinhibited or pseudopsychopathic type and is characterised by poor impulse control, explosive outbursts, and inappropriate behaviour.

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3
Q

A 65-year-old man has presented to the clinic with frontal lobe deficits

Identify two clinical features commonly seen in Dorsolateral prefrontal syndrome

A

Executive dysfunction and Diminished planning

called as dysexecutive or disorganized type is featured by cognitive dysfunction, diminished judgment, planning and poor insight. The patients are also described to be concrete and inflexible in nature.

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4
Q

Identify the test which could be used in each of the following situation

Which of the above tests use the following question: ‘How many camels are there in England?’

A

Cognitive Estimation Test

In cognitive estimates test, factual questions that require abstract processing are asked. This is a test of frontal function.

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5
Q

Identify the test which could be used in each of the following situation

Scores are given for pronouncing the words DRACHM, SUPERFLUOUS and PLACEBO correctly

A

National Adult Reading Test

In NART, scores are given for correct pronunciation of complex phonetic words.

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6
Q

Identify the test which could be used in each of the following situation

The subject is asked to connect scattered numbers and alphabets in the sequence 1A2B3C4D5E6F…, using a pen and paper.

A

Trail Making Test B

In Trail Making Test A, the subject has to simply connect 1-2-3-4-5-6…etc as a sequence. In Trail Making Test B, the subject has to connect the sequence 1A2B3C4D5E6F…etc.

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7
Q

Match the following ECG changes with the most likely scenario

A 50-year-old woman has been feeling low in mood, and finding it difficult to sleep. She is prescribed a medication by her GP, which is increased over a period of 4 weeks. Subsequently she has an ECG after reporting palpitations and dizziness

A

Torsades de Pointes with use of antidepressant

At higher doses, antidepressants may cause Torsades de Pointes.

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8
Q

Match the following ECG changes with the most likely scenario

A severely depressed man is prescribed a medication, which leaves him with a dry mouth. A few days later he is found at home collapsed, having taken a significant overdose

A

QTc prolongation of >510ms

Amitriptyline is an antidepressant medication that causes dry mouth and QTc prolongation leading to severe ventricular arrhythmias, collapse and death

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9
Q

Match the following ECG changes with the most likely scenario

A middle-aged man admitted to the ward with chronic psychotic illness reports some chest discomfort. An ECG is performed

A

Saddle-shaped ST elevation

This is clozapine-induced pericarditis.

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10
Q

Match the following ECG changes with the most likely scenario

A young man with first episode psychosis is prescribed a medication and three months later has a routine ECG

A

Prolongation of QTc interval

Prolongation of QTc interval is a common side effect of antipsychotic medication.

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11
Q

Which eating disordered behaviour would be associated with description?

20-year-old woman with a history of bulimia nervosa. She stopped purging via self-induced vomiting 2 days ago and now describes painless swellings on her face.

A

Parotitis

Parotitis can be associated with bulimia nervosa, particularly after an individual ceases to purge. It is usually painless and resolves spontaneously. Medication to stimulate salivation may be useful.

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12
Q

Which eating disordered behaviour would be associated with description?

19-year woman with a history of anorexia nervosa complicated by laxative misuse. She has recently stopped using laxatives and is currently engaging more with the planned treatment. She informs her care co-ordinator that she has been experiencing abdominal swelling.

A

Decrease in intestinal motility

Long-term laxative misuse is associated with overstimulation of the colon leading to constipation once the laxatives are discontinued. Ideally, laxatives would be gradually withdrawn to allow the colon to return to a normal tone in a graded fashion.

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13
Q

Which eating disordered behaviour would be associated with description?

32-year-old woman presenting to the emergency department with severe abdominal pain and vomiting. She describes a sharp epigastric pain radiating to the back. She claims that this pain gets worse with eating. Her partner refuses to believe her as she has an ongoing history of eating disorder with purging behaviours

A

Pancreatitis

Sharp epigastric pain radiating to the back that gets exacerbated by eating is a feature of acute pancreatitis. The onset of acute pancreatitis in the absence of heavy alcohol use or biliary disorders should prompt an enquiry regarding eating disorders.

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14
Q

Which of the following neurological signs are associated with situation

70-year-old former electrician who has suffered a left hemisphere CVA. He has subsequently recovered his right arm and leg function completely. He has discovered that, although he has suffered no residual weakness or loss of sensation, he cannot not use his tools as usual. If told to do something he cannot carry out the action but can do so if he is not thinking consciously about it.

A

Ideomotor apraxia

This is ideational apraxia. Patients have an inability to conceptualise a task and impaired ability to complete multistep actions. They struggle to select and carry out an appropriate motor program. For example, the patient may complete actions in incorrect orders, such as buttering bread before putting it in the toaster, or putting on shoes before putting on socks.

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15
Q

Which of the following neurological signs are associated with situation

68-year-old woman who has suffered a CVA. She now finds it difficult to perform multi-stage actions, such as making a cup of tea, even though she can understand what to do and can repeat single actions if she is shown them by others.

A

Ideational apraxia

This is ideational apraxia. Patients have an inability to conceptualise a task and impaired ability to complete multistep actions. They struggle to select and carry out an appropriate motor program. For example, the patient may complete actions in incorrect orders, such as buttering bread before putting it in the toaster, or putting on shoes before putting on socks.

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16
Q

Which of the following neurological signs are associated with situation

58-year-old man who has suffered a significant head injury in a road traffic collision. He now finds that he cannot identify landmarks near his home, despite having been an avid local historian

A

Visuospatial agnosia

Visuospatial agnosia is a loss of the sense of “whereness” in the relation of oneself to one’s environment and in the relation of objects to each other

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17
Q

Identify the specific loci associated with the following disease

Parkinson’s Disease - Choose TWO options

A

SNCA gene located on chromosome 4, PRKN gene located on chromosome 6

Familial cases of Parkinson disease can be caused by mutations in the LRRK2, PARK7, PINK1, PRKN, or SNCA gene.
-The alpha-synuclein (SNCA) gene located in the long arm of chromosome 4
- The parkin (PRKN) gene located in the long arm of chromosome 6.

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18
Q

Identify the specific loci associated with the following disease

Fronto-temporal Dementia - Choose THREE options

A

C9ORF72 gene located on chromosome 9, MAPT gene located on chromosome 17, GRN gene located on chromosome 17

Most familial frontotemporal dementia is caused by mutations in three genes. These are a recently discovered gene called C9ORF72, and genes for the proteins tau (MAPT) and progranulin (GRN).
-C9ORF72 is located at 9p21.2, which is the short (p) arm of chromosome 9 at position 21.2 and is also associated with Amyotrophic Lateral Sclerosis.
-MAPT is located at 17q21.31, which is the long (q) arm of chromosome 17 at position 21.31 and is associated with frontotemporal dementia with Parkinson-17 and progressive supranuclear palsy.
- GRN is located at 17q21.31, which is the long (q) arm of chromosome 17 at position 21.31.

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18
Q

Identify the specific loci associated with the following disease

Huntington Disease - Choose ONE option

A

HTT gene located on chromosome 4

Mutations (CAG trinucleotide repeats) in the HTT gene cause Huntington disease. It is located at 4p16.3, which is the short (p) arm of chromosome 4 at position 16.3. The HTT gene provides instructions for making a protein called huntingtin.

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19
Q

Which of the brain parts are associated with the below scenarios?

37-year-old man with a history of alcohol dependence. His family have brought him into A&E after visiting him at home and finding that his memory appeared to be impaired. They reported that he kept forgetting that they were in his house.

A

Mamillary body alpha ketoglutarate

Korsakoff’s syndrome is due to thiamine deficiency, usually in the context of alcohol dependence. Thiamine is essential for the decarboxylation of pyruvate, and deficiency during this metabolic process is thought to cause damage to the medial thalamus and mammillary bodies of the posterior hypothalamus, as well as generalised cerebral atrophy

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20
Q

Which of the brain parts are associated with the below scenarios?

28-year-old woman with a diagnosis of depression who has been started on antidepressants. She wants to know about serotonin metabolism and asks about the main storage site for serotonin in the brain

A

Raphe nuclei

The neurons of the raphe nuclei are the principal source of serotonin release in the brain.

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21
Q

Which of the brain parts are associated with the below scenarios?

22-year-old woman presenting with a history of recurrent hypersomnia associated with symptoms of hyperphagia, hypersexuality, and cognitive impairment

A

Hypothalamus

Kleine-Levin syndrome is a recurrent hypersomnia associated with symptoms of hyperphagia, hypersexuality, and cognitive impairment. Kleine-Levin syndrome is rare, affecting an estimated 1-5 per million individuals. There are only approximately 200 reported cases to date in the literature. The symptoms of Kleine-Levin syndrome are characterized by their intermittent and periodic nature. During episodes, patients complain of excessive daytime sleepiness, despite sleeping anywhere from 12 to 21 hours per day. While awake, patients are often apathetic and report impairment in communication, concentration, and memory. The classic triad of hypersomnia, hyperphagia, and hypersexuality is not always present. In fact, in one large case series, only 45% of patients presented with all three symptoms. Hypersexuality is much more common in men than women. Thalamic hypoperfusion has been the most consistent finding in these studies when patients are examined during their symptomatic period. Once patients revert to their normal behavior, the thalamic hypoperfusion seems to resolve, while residual hypoperfusion persists in other brain locations. Fludeoxyglucose-positron emission tomography scanning has demonstrated asymmetric hypometabolism in the thalamus and hypothalamus.

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22
Q

Identify the age of the following developmental milestones

Ability to build a tower of 6 cubes

A

2 years

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23
Q

Identify the age of the following developmental milestones

Crawling

A

6-9 months

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24
Q

Identify the age of the following developmental milestones

Copying a square

A

4 years

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25
Q

Identify the age of the following developmental milestones

Ability to say “dada” and “mama” correctly

A

12 months

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26
Q

Identify the age of the following developmental milestones

Ability to use simple sentences

A

3 years

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27
Q

Regarding anti-dementia medication

What is Memantine’s mechanism of action?

Choose TWO options

A

Non-Competitive NMDA receptor antagonist, 5-HT3 receptor antagonist

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28
Q

Regarding anti-dementia medication

What is Galantamine’s mechanism of action?

Choose TWO options

A

Nicotinic receptor modulator, Selective and reversible acetylcholinesterase inhibitor

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29
Q

Regarding anti-dementia medication

What is Rivastigmine’s mechanism of action?

Choose TWO options

A

Pseudo-irreversible acetylcholinesterase inhibitor, Butyrylcholinesterase inhibitor

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30
Q

Regarding anti-dementia medication

What is Donepezil’s mechanism of action?

Choose ONE option

A

Selective and reversible acetylcholinesterase inhibitor

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31
Q

How do you make the following medication change

Amitryptiline to citalopram

A

Half dose, start new drug, then slow withdrawal

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32
Q

How do you make the following medication change

Fluoxetine to Tranylcypromine

A

Withdraw and wait for 5-6 weeks

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33
Q

How do you make the following medication change

Phenelzine to Sertraline

A

Withdraw and wait for 2 weeks

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34
Q

How do you make the following medication change

Fluoxetine to duloxetine

A

Stop and start other drug immediately

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35
Q

How do you make the following medication change

Trazodone to Mirtazapine

A

Cross taper with caution

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36
Q

Which one of the following is not a frontal lobe function test?

Tower of London, Verbal fluency, Luria’s motor tests, California Verbal Learning Test, Cognitive estimates

A

California Verbal Learning Test

Frontal lobe tests include Stroop test, Halstead trial making, cognitive estimates, Tower of London, Wisconsin card sorting test, verbal fluency, Luria’s motor tests and multiple errands tests. The California Verbal Learning Test (CVLT) is useful to assess verbal memory. Though it may be affected in patients with frontal lesions, CVLT is not a specific frontal lobe test.

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37
Q

Aura is a commonly occurring phenomenon seen in which type of seizures?

A

Complex partial seizures

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38
Q

In a Broca’s area lesion, which of the following features is seen?

A

Comprehension is preserved

Patients with Broca’s aphasia produce slow, halting speech that is rarely grammatical. Typical Broca’s aphasics eliminate inflections such as -ed and words not central to the meaning of the sentence, such as ‘the’ and ‘and’.

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39
Q

A 50-year-old woman began complaining of double vision and blurry vision 3 months ago and has since had diminishing interaction with her family, a paucity of thought and expression, and unsteadiness of gait. Her whole body appears to jump in the presence of a loud noise. An MRI scan and routine CSF examination are unremarkable. What is the most appropriate diagnosis?

A

Creutzfeldt-Jakob disease

The neurological complaints occurring early in the course of Creutzfeldt-Jakob disease are often cerebellar or visual. Patients may complain of ataxia, clumsiness, or dysarthria, as well as diplopia, distorted vision, blurred vision, field defects, changes in colour perception, and visual agnosia. Ultimately cortical blindness may occur.

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40
Q

5-year-old boy with poor social interactions and stereotypical behaviours. Which part of the brain would you expect to be dysfunctional?

A

Vermis of cerebellum

This boy has features of autistic spectrum disorder that includes poor social interactions, and stereotypical behaviours. Hypoplasia of cerebellar vermis (involving to some extent the cerebellar hemispheres) is well-documented in autism. Purkinje cell count in the cerebellum is significantly lower in patients with autism.

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41
Q

Which of the following structures are employed in processing emotionally salient memories?

A

Amygdala

The amygdala and hippocampal complex, two medial temporal lobe structures, are linked to two independent memory systems, each with unique characteristic functions. In emotional situations, these two systems interact in subtle but important ways. Specifically, the amygdala can modulate both the encoding and the storage of hippocampal- dependent memories. The hippocampal complex, by forming episodic representations of the emotional significance and interpretation of events, can influence the amygdala response when emotional stimuli are encountered.

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42
Q

A gentleman presents with a 1-day history of sudden onset symptoms of akinetic mutism. What is the vascular origin of this presentation?

A

Anterior cerebral artery

Bilateral infarct involving the anterior cerebral artery produces quadriparesis (legs weaker than arms) and akinetic mutism (ventromedial or cingulate syndrome).

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43
Q

Which of the following brain regions is associated with thermoregulation?

A

Pre-optic area

The pre-optic area is a region of the hypothalamus. It is responsible for thermoregulation. It receives nervous stimulation from receptors in the skin, mucous membranes and hypothalamus

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44
Q

67-year old man admitted to the geriatric ward with a history of recent weight loss. On obtaining further history, he admits to loss of the sense of smell. This feature is suggestive of pathology in which part of the brain?

A

Frontal lobe pathology

Anosmia is the inability to perceive odour or loss of the sense of smell. A permanent loss of smell may be caused either by a loss of olfactory receptor neurons in the nose or damage to the olfactory nerve or the brain areas that process smell, usually after head injury or due to tumors of the frontal lobe.

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45
Q

Which of the following is the precursor of serotonin?
5-hydroxydopamine
5-hydroxyindoleacetic acid
5-hydroxytryptophan
5-hydroxytryptamine
Anandamide

A

5-hydroxytryptophan

5-hydroxytryptamine is serotonin

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46
Q

The somatodendritic inhibition of 5-HT release is regulated by

A

5-HT1A receptors

The 5-HT1A receptor is found at both somatodendritic and post-synaptic sites. Somatodendritic 5-HT1A receptors in the dorsal and median raphe nuclei are autoreceptors regulating 5-HT neuronal firing. Post-synaptic 5-HT1A receptors are found in the hippocampus and periaqueductal grey matter where they regulate behaviours such as resilience, impulsivity and restraint of excessive response to stress. The 5-HT1A receptor may be an important target in the action of antidepressants.

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47
Q

A 70-year-old woman awakens with inability to walk and is found on the floor by her family. Her examination shows right face, arm, and leg weakness and numbness. What is the most likely cause of her gait problems?

A

Left hemisphere infarction

The presentation is suggestive of a cerebral infarct, most likely to be on the left side as the woman is presenting with right-sided weakness.

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48
Q

77-year-old gentleman suffering from gradually progressive cognitive decline for last 6 months. He has history of Parkinson’s disease for last 3 years and suffers from visual hallucinations. The chemical that is mainly involved and deficient in this condition is

A

Acetylcholine

The diagnosis is Parkinson’s disease dementia. In both Lewy body dementia and Parkinson’s disease dementia, brain acetylcholine levels are reduced similar to Alzheimer’s disease. Therefore acetylcholinesterases (Anti-dementia drugs) could be used in the treatment of Lewy body dementia.

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49
Q

A patient was diagnosed with HIV almost 2 years ago. He is now presenting with cognitive impairment. Which of the following cells is least likely to be affected?

A

Neurones

Theoretically all the main cell types of the CNS, astrocytes, oligodendrocytes, neurons, perivascular macrophage and microglia, can be infected by HIV-1 since they possess the receptors and/or co-receptors for HIV-1 entry, but only the latter two are the most commonly infected cells by HIV-1.
Most studies have indicated an absence of in vivo infection in neurons. It is unclear whether detection of infected neurons is complicated by the loss of the infected neuronal populations.

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50
Q

Regional cerebral blood flow is affected in schizophrenia. Which of the following area is most likely to be affected?

A

Prefontal cortex

Hypofrontality has been repeatedly demonstrated.
In schizophrenia:
Hypoperfusion: frontal lobes and frontal cortex, anterior and medial cingulate gyri, and parietal lobes. Hyperperfusion: cerebellum, brainstem and thalamus.

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51
Q

The post-mortem examination done on an elderly gentleman who suffered from a slowly progressive non-amnesic cognitive impairment, disinhibition and pill-rolling tremors reveals ubiquitin inclusions. Which gene is most likely to reveal a mutation?

A

Progranulin

This is a case of frontotemporal dementia (FTD). FTD is caused by mutations in progranulin (PGRN) especially in familial FTD. PGRN is located on chromosome 17q21.31.

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52
Q

The density of D2 receptors seen in children before 5 years of age is greater than adult levels. Their regression to adult levels is reached during the second decade. The developmental process through which this is achieved is called

A

Pruning

Synaptic ‘pruning’ refers to the natural elimination of unnecessary synapses that normally occurs in adolescence, making the brain more organised and efficient.

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53
Q

A disturbance in cerebral torque is proposed as the underlying pathological change in which disorder?

A

Psychosis

‘Cerebral torque’ refers to opposing right-left asymmetries of frontal and parieto-occipital regions of the brain.
Crow’s hypothesis and observations suggest that a primary disturbance in psychosis is in brain structure, and this is related to cerebral asymmetry in the form of torque.

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54
Q

Which is the most common opportunistic infection of CNS in patients with AIDS?

A

Toxoplasma gondii

Toxoplasmic encephalitis (TE) is caused by the protozoan Toxoplasma gondii. The disease occurs almost exclusively because of reactivation of latent tissue cysts. Primary infection occasionally is associated with acute cerebral or disseminated disease. Seroprevalence varies substantially among different communities (e.g., approximately 15% the United States and 50%–75% in certain European countries). Prior to the introduction of antiretroviral drugs, the 12-month incidence of TE was approximately 33%. The incidence has decreased substantially with the initiation of ART. Clinical disease is rare among patients with CD4+ T lymphocyte counts more than 200 cells/μL. Primary infection occurs after eating undercooked meat containing tissue cysts or ingestion of oocysts that have been shed in cat feces and have sporulated in the environment (which requires at least 24 hours). No transmission of the organism occurs by person-to-person contact

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55
Q

Which of the following is a glucocorticoid receptor antagonist?
D-Cycloserine
Clozapine
Mifepristone
Agomelatine
Gabapentin

A

Mifepristone

Mifepristone is a glucocorticoid receptor antagonist. It is a blocker of type 2 glucocorticoid and progestin receptors, and the preliminary research findings suggest that it could effectively ameliorate symptoms of major depression.

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56
Q

The EEG findings of a patient shows multiple spike and wave activity. Identify the disease.

A

Myoclonic epilepsy

Common EEG findings include rapid spike wave and poly spike wave.

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57
Q

The substance that is secreted by hypothalamus and enhances food intake is

A

Neuropeptide Y

Food intake is regulated by various factors such as neuropeptide Y. Neuropeptide Y potently induces an increase in food intake, and simultaneously stimulates arginine- vasopressin (AVP) secretion in the brain

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58
Q

There is increased concentration in axon terminal prior to depolarisation with which ion?

A

Potassium

There is a negative resting membrane potential of around -70mV. It is maintained by the sodium pump, which actively transports sodium ions out of the cell and potassium ions into the cell. There is increased concentration of potassium ions in axon terminal prior to depolarization. An action potential is propagated by the depolarization spreading laterally to adjacent parts of the neurone. An action potential is initiated in the axon hillock when the synaptic signals received by the dendrites and soma are sufficient to raise the intracellular potential from -70 mV to the threshold potential of - 55mV. When this potential is reached, the Na+ channels present in the axon initial segment will open. This Na+ influx causes a rapid reversal of the membrane potential from -90 to +40 mV. When the membrane potential reaches +40mV, the Na+ channels close and the voltage-gated K+ channels open. K+ ions move out of the axon, and ‘repolarizes’ the membrane.

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59
Q

What is true regarding REM latency and depression?

A

Shortened REM latency is not a specific marker of depression

Shortened REM latency is not a specific marker of depression; similar changes have been reported in other psychiatric disorders including mania, schizophrenia, schizoaffective disorder, OCD, panic disorder, and eating disorders. Previously it was thought that REM latency may distinguish between certain subtypes of depression. It is now understood that patients with depression show characteristic sleep-EEG changes, including disinhibition of REM sleep characterised by shortened REM latency, or sleep- onset REM periods, prolonged first REM period, and enhanced REM density. Most antidepressants suppress REM sleep in patients and in healthy volunteers. REM suppression includes prolonged REM latency, reduced time spent in REM sleep, and decreased REM density. Withdrawal of REM suppressing antidepressants is followed by REM rebound (resulting in decreased REM latency, increased REM time, and enhanced REM density).

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60
Q

A patient attending your clinic, was started on clozapine a few weeks ago. He now complains of shortness of breath, tachycardia and fever. Which of the following would you request urgently?
Chest x-ray
CPK
Troponin
ECG
D-dimer

A

Troponin

The most important consideration is clozapine-induced myocarditis. It occurs within 6-8 weeks of starting clozapine (median 3 weeks). Symptoms include fever, tachycardia, flu-like symptoms, fatigue, dyspnea (with increased respiratory rate) and chest pain. One proposed monitoring protocol recommends obtaining baseline troponin I/T, C- reactive protein and echocardiography, and monitoring troponin and C-reactive protein on days 7, 14, 21 and 28. At least twice the upper limit of normal troponin was found in 90% of cases. In addition, persistent abnormally high heart rate or signs or symptoms consistent with infective illness should be followed by daily troponin and C-reactive protein investigation until features resolve.

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61
Q

Prolonged QTc interval is associated with:
Select one:
Diazepam
Buprenorphine
Methadone
Naltrexone
Naloxone

A

Methadone

Methadone alone or combined with other arrythmogenic agents may increase the likelihood of QT interval prolongation, which is associated with torsades de pointes and can be fatal. ECG monitoring is therefore recommended whilst taking methadone.

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62
Q

Your patient has a diagnosis of schizophrenia and is currently taking risperidone tablets. Her prolactin level tested recently shows an elevation that is twice the value recorded prior to commencing the treatment. Which of drug could be considered as the best possible add-on treatment?

A

Aripiprazole

For most patients with symptomatic hyperprolactinaemia, a switch to non-prolactin elevating drug is the first choice. An alternative with modest but evolving evidence is to add aripiprazole to existing treatment. Hyperprolactinaemia and related symptoms are reported to improve fairly promptly following the addition of aripiprazole.

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63
Q

A 47-year-old man developed seizures on taking an antipsychotic medication. The psychiatrist treating him initially reduced the dose of his antipsychotic, and later started him on sodium valproate. Which antipsychotic drug is most likely to produce this effect?

A

Clozapine

Seizures may occur at any time whilst taking clozapine. It is a dose and plasma level-related effect. Prophylactic valproate or lamotrigine is used in high-risk subjects when titrating to a high dose of clozapine. EEG abnormalities are common in those on clozapine treatment; these abnormalities do not always indicate seizure activity.

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64
Q

Patient with schizophrenia developed cardiomyopathy on taking this medication for the last 9 months. The most likely drug is

A

Clozapine

Clozapine is associated with myocarditis and cardiomyopathy. Myocarditis seems to occur within 6-8 weeks of starting clozapine (median 3 weeks) and cardiomyopathy may occur later in treatment (median 9 months) but both may occur at anytime.

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65
Q

Which one among the following is a risk factor for SSRI induced hyponatraemia?
High initial sodium
Low body mass
Male sex
Young age
Cold weather

A

Low body mass

Risk factors for SSRI induced hyponatraemia include old age, female sex, low body weight, low baseline sodium concentration, history of hyponatraemia, warm weather,
reduced renal function, medical co-morbidity and some drug treatments like carbamazepine, antipsychotics, thiazide diuretics, NSAIDs, cancer chemotherapy and drugs like tramadol, omeprazole and trimethoprim.

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66
Q

A patient has depression but would accept treatment only if the probability of drug induced weight gain is low. Which of the following antidepressants is best to avoid?
Duloxetine
Mirtazapine
Fluoxetine
Sertraline
Venlafaxine

A

Mirtazapine

Mirtazapine is associated with weight gain in around 1/5th of subjects, especially in the first 4 weeks of treatment. This effect may be secondary to its effects on the 5-HT2C and H1 receptors.

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67
Q

Which of the following is primarily tested by using Abnormal Involuntary Movement Scale (AIMS)?

Psychomotor agitation
Tardive dyskinesia
Jaw stiffness
Torticollis
Akathisia

A

Tardive dyskinesia

The AIMS records the occurrence of tardive dyskinesia (TD) in patients receiving neuroleptic medications. This test is used to detect TD and to follow the severity of a patient’s TD over time.

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68
Q

Which one of the following is the least likely feature associated with Neuroleptic Malignant Syndrome?
Persistent bradycardia
Hyperthermia
Muscle rigidity
Raised CPK levels
Autonomic lability

A

Persistent bradycardia

Bradycardia is not a feature seen in patients with NMS. The symptoms and signs of NMS include hyperthermia, rigidity, agitation, altered levels of consciousness, tachycardia, tachypnoea, hypertension, tremor, diaphoresis, raised CPK levels, leukocytosis and metabolic acidosis.

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69
Q

The upper normal value of QTc in females is

A

470 msec

The upper normal value of QTc in males is 440 msec and females is 470 msec. Mounting evidence links QTc values over 500 msec to a clearly increased risk of arrhythmia.

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70
Q

Which of the following mood stabilisers is most associated with the development of orofacial clefts when used during pregnancy?

A

Valproate

Valproate is the most teratogenic mood stabiliser. Valproate confers a higher risk (around 10% for major malformations) than carbamazepine and should not be used in women of child-bearing age except where all other treatment has failed. The most common congenital malformations with valproate are neural tube defects, cardiac anomalies, urogenital malformations (including hypospadias), skeletal malformations, and orofacial clefts. Major malformations, specifically orofacial clefts, have been reported with topiramate, though the risk of oral clefts may be higher in women with epilepsy who use higher doses. There is growing evidence that lamotrigine is safer in pregnancy than carbamazepine or valproate across a range of outcomes. The risk of major malformations with lamotrigine appears to be in the range reported for children not exposed to anticonvulsants.

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71
Q

Which class of psychotropics, when used during pregnancy, most increases the risk of orofacial clefts in newborns?

A

Mood stabilisers

Mood stabilizers (including valproate, carbamazepine, and topiramate), when used during pregnancy have been most associated with orofacial clefts in newborns. First trimester exposure to benzodiazepines were previously associated with an increased risk of oral clefts in newborns, but subsequent studies have failed to confirm this association.

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72
Q

Which of the following adverse effects has not been reported in association with therapeutic doses of SSRIs?
Photosensitivity
Hypertension
Hallucinations
Galactorrhea
Akathisia

A

Hypertension

Several published reports of SSRI-induced movement disorders are available; they mostly report akathisia, dyskinesia, parkinsonism and occasionally dystonia and bruxism. Most of these were reported when using normal therapeutic doses. SSRIs, especially escitalopram and paroxetine, are occasionally associated with galactorrhea. Though rare, photosensitivity and hallucinations have been anecdotally reported with SSRIs. Nevertheless, therapeutic range of SSRI dose is not associated with systemic hypertension, though SNRIs such as venlafaxine carries this risk especially above the dose of 225mg/day.

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73
Q

Which drug is likely to cause tricuspid valve displacement towards the apex of the right ventricle in the newborn, when used during pregnancy?

A

Lithium

Ebstein’s anomaly is a congenital heart defect in which the tricuspid valves are displaced towards the apex of the right ventricle. Lithium use has a well-known association with this cardiac malformation (relative risk is 10-20 times more than control). Some case reports have also implicated benzodiazepines, although this is rare.

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74
Q

The risk of developing seizures with the use of clozapine is increased by

A

0.1

Patients can have generalized tonic-clonic seizures during treatment with clozapine. Life-table analysis predicts a cumulative 10% risk of seizures after 3.8 years of treatment. Clozapine-related seizures appear to be dose-related. High-dose therapy (greater than or equal to 600 mg/day) was associated with a greater risk of seizures (4.4%) than medium (300 to 600 mg/day; 2.7%) or low doses (less than 300 mg/day: 1.0%). Also, rapid upward titration may increase seizure risk.

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75
Q

Which of the following antidementia drugs undergo breakdown by cholinesterase itself with no hepatic involvement in metabolism?
Rivastigmine
Donepezil
Galantamine
Memantine
Tacrine

A

Rivastigmine

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76
Q

Phenelzine has been shown to be superior to placebo in the treatment of

A

Social phobia

The monoamine oxidase inhibitors (MAOIs) have shown superior efficacy to other antidepressants in the the treatment of generalized social phobia. Phenelzine in particular, has extensive placebo-controlled trial evidence in support of its use in social anxiety with nearly 67% patients showing significant improvement during acute treatment.

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77
Q

Which one among the following statements about atypical antipsychotic drugs is incorrect?
Select one:
Atypical antipsychotic drugs have relatively high serotonin HT-2A to dopamine D-2 receptor binding ratios
The extrapyramidal safety of atypical antipsychotic drugs depends on the affinity for nigrostriatal dopamine D-2 receptors
Relatively high 5HT-2A to dopamine D-2 binding ratios of atypical antipsychotic drugs may be responsible for the efficacy and safety advantages.
Atypical antipsychotic drugs have less affinity for nigrostriatal than typical antipsychotic drugs
The efficacy of antipsychotic drugs appear to be determined by the affinity for nigrostriatal dopamine receptors

A

The efficacy of antipsychotic drugs appear to be determined by the affinity for nigrostriatal dopamine receptors

The efficacy of antipsychotic drugs appears to be determined by the affinity for mesolimbic dopamine receptors and not by the affinity for nigrostriatal receptors.

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78
Q

Which mood stabiliser is not recommended for prophylaxis of bipolar affective disorder?

A

Topiramate

There are no large trials indicating the usefulness of topiramate in BPAD. Current evidence is sparse and limited.

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79
Q

Which of the following is a prodrug whose metabolite is used as an individual compound therapeutically? Select one:
Citalopram
Zopiclone
Fluoxetine
Risperidone
Haloperidol

A

Risperidone

Paliperidone is 9-OH-risperidone.
Citalopram is not a prodrug - escitalopram is the therapeutically active S-enantiomer of citalopram.

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80
Q

Which antipsychotic has a longer therapeutic effect attributable to its active metabolite?
Select one:
Amisulpride
Risperidone
Chlorpromazine
Haloperidol
Sulpride

A

Risperidone

The apparent half-life of risperidone is 3 hours while the apparent half-life of 9-hydroxyrisperidone (also known as paliperidone) is about 21 hours (in extensive metabolizers). The pharmacokinetics of risperidone and 9-hydroxyrisperidone combined, after single and multiple doses, were similar in extensive and poor metabolizers, with an overall mean elimination half-life of about 20 hoursRisperidone

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81
Q

Which of the following measures can help reduce lithium-induced tremors? Select one: Drug holidays
Single large dose
Taking lithium after food
Smaller, more frequent doses
Change time of administration to mornings only

A

Smaller, more frequent doses

Administer the lithium in smaller, more frequent doses. Propranolol (30 to 160 mg/d) may also be helpful

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82
Q

A psychiatric trainee has started lamotrigine in addition to a second mood stabiliser for a lady with a relapse of bipolar affective disorder. The pharmacist is concerned that the second mood stabiliser will increase possibility of toxicity of the lamotrigine. The second mood stabiliser is most likely to be

A

Sodium valproate

Sodium valproate can inhibit the breakdown of lamotrigine and so can result in higher plasma levels of lamotrigine. Valproate also increases the risk of allergic rash seen with lamotrigine.

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83
Q

32-year-old man who has presented to his GP with symptoms of low mood, lack of enjoyment, poor sleep, low energy levels and diminished appetite. How long would he need to have these symptoms before he could be diagnosed with a depressive episode under ICD-10 criteria?

A

14 days

ICD-10 requires a person to have depressive symptoms most days, most of the time for at least 2 weeks before an episode of depression can be diagnosed.

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84
Q

35 year old who has recently been diagnosed with rapid cycling bipolar affective disorder. Which of the following is true about this disorder? Select one:
More common in males
Associated with stimulant use
Associated with hyperthyroidism
At least two episodes of bipolar disorder in 1 year
At least four episodes of bipolar disorder in 1 year

A

At least four episodes of bipolar disorder in 1 year

Rapid cycling bipolar affective disorder is defined as having 4 or more episodes of mood disturbance (manic, hypomanic, mixed or depressive) within 12 months.

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85
Q

The Sally Anne Test is a psychological test used with children. Which of the following is TRUE regarding the Sally Anne Test? Select one:
It is a test of second-order false belief tasks
It is a test of theory of mind
Girls are more likely to correctly interpret the test than boys
It is correctly interpreted by the age of 3
It was devised by Piaget

A

It is a test of theory of mind

The Sally Anne test is a test of theory of mind whereby children observe a scenario in which a doll (Anne) removes a marble from another doll’s (Sally’s) basket and places it in
a box. The other doll then enters the scene and the children are asked where it will look for its marble. To pass the children must identify that Sally will look in her basket as she does not know that the marble has been moved. Children generally pass it after the age of 4.

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86
Q

72-year-old woman who was admitted to the orthopaedic ward following a fall. On examination she appears confused, she’s ataxic and nystagmus is present. You read in her notes that she had a long history of alcohol dependence, and spent many years homeless. During her stay on the ward her confusion becomes less prominent but her cognitive impairment remains. Which of the following statements about Korsakoff is not true:
Select one:
Chronic and severe thiamine deficiency result in insufficient concentrations to enable thiamine to cross the blood-brain barrier
Once the features of Korsakoff have been recognised, they can be reversed using IV Thiamine
Reductions in thiamine-dependent enzymes lead to impairment of oxidative metabolism
Thiamine acts as a co-factor for alpha-ketoglutatare dehydrogenase
Reductions in thiamine pyrophosphate-dependent enzymes have been found in autopsied cerebellar vermis samples

A

Once the features of Korsakoff have been recognised, they can be reversed using IV Thiamine

Korsakoff is irreversible; it may be prevented with treatment in the preceding Wernicke’s encephalopathy with high dose parenteral thiamine.

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87
Q

40-year-old woman with a diagnosis of acute intermittent porphyria. Which of the following is FALSE about acute intermittent porphyria?
Select one:
It is an autosomal dominant disorder
Physical signs often include an abdominal rash
Psychiatric side effects often include psychosis
It is treated with haemin
It can be precipitated by use of clonazepam

A

Physical signs often include an abdominal rash

Acute Intermittent Porphyria is not typical characterised by a rash; abdominal pain is the most common symptom. It is usually inherited in an autosomal dominant manner but autosomal recessive inheritance has been described. It is caused by mutations in the HMBS gene, which codes for the enzyme porphobilinogen deaminase. It causes acute attacks of abdominal pain and other symptoms, potentially including psychosis. It can be precipitated by the use of medications, including clonazepam, alcohol, low carbohydrate diet, infections and hormone changes during the menstrual cycle. A high-carbohydrate (10% glucose) infusion is recommended, which may aid in recovery. Hematin and heme arginate is the treatment of choice during an acute attack. Heme is not a curative treatment, but can shorten attacks and reduce the intensity of an attack.

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88
Q

28 year old man who has been brought to A&E by his family as they have been concerned that he has been acting unusually at home and has been isolating himself. Whilst there he informs staff he describes experiencing autoscopic hallucinations. Which of the following is TRUE about this phenomenon?
It describes altered perception of colour
It is a normal clinical phenomenon
It is seeing oneself in one’s external space
It is seen only in depression
It is an outcome indicator

A

It is seeing oneself in one’s external space

An autoscopic hallucination is a visual misperception in which an individual sees himself or herself as if they are an external stimulus.

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89
Q

A patient had a traumatic brain injury following a collision between his car and another vehicle, two-and-a-half years ago. Following a period spent in a coma, he gradually recovered normal functioning in most domains. However, his partner feels his personality isn’t what it used to be. He doesn’t have the same humour or interests, he’s more predisposed to being emotional, sometimes angry. Which psychological test would you consider appropriate in testing for post- traumatic personality changes?

A

MMPI

The Minnesota Multiphasic Personality Inventory (MMPI) is a standardised psychometric test which has been used to test personality change and has some validity in cases of post-traumatic brain injury

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90
Q

Patient is attending the memory clinic and undergoing cognitive testing for suspected Alzheimer’s dementia. During one part of the examination the psychologist reads a list of 10 words. After 20 minutes and other tasks the patient is asked to recall as many words as possible. This is an example of testing

A

Delayed recall

Delayed recall involves the retrieval of previously encoded words, whereas delayed recognition measures only whether or not a word has been encoded and consolidated. Tests of free recall involve immediate assessment of what is recalled after a list is read e.g. upon hearing the list read, patients are instructed that they will be asked to repeat as many words as they can.
Asking the patient to point out whether a given word was in the original list after a delay is testing ‘delayed recognition’ as well as consolidation. Semantic memory refers to general world knowledge accumulated through the lifespan.

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91
Q

According to ICD-10, how long must symptoms be present for before a diagnosis of mania can be made?

A

7 days

ICD-10 states that manic symptoms must be present for at least 7 consecutive days for a manic episode to be diagnosed. Symptoms must be present for at least 4 days for an episode of hypomania to be diagnosed.

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92
Q

A mum is telling you about the challenges of looking after her three children, alongside managing her long-standing depression. The youngest is 18 months old. She’s noticed that when she leaves him on his own to play, he doesn’t seem bothered, unlike the other two who used to cry a great deal. When she has visitors to the flat, she finds that he plays alongside them quite calmly, even though he may not have met them before. When she returns to the room after a period of absence, he doesn’t seem to notice her much; he rarely makes eye contact. Taking into consideration the experiments conducted by Bowlby and Mary Ainsworth in studying attachment, which attachment style is mum describing?

A

Avoidant

Avoidant attachment is characterised by a desire to maintain emotional distance

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93
Q

25-year-old woman with an IQ of 36. How severe is her degree of learning disability?

A

Moderate learning disability

A classification of mild, moderate, severe and profound has been used to describe the degree of learning disability. IQ measurement has traditionally been used to define severity:
* Profound - IQ of less than 20
* Severe - IQ of 20-34
* Moderate - IQ of 35-49
* Mild - IQ of 50-70

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94
Q

Which of the following Personality Disorders is included in DSM-IV, but NOT ICD-10?
Select one:
Schizotypal Personality Disorder
Dependent Personality Disorder
Schizoid Personality Disorder
Histrionic Personality Disorder
Paranoid Personality Disorder

A

Schizotypal Personality Disorder

The World Health Organization’s ICD-10 uses the name schizotypal disorder. It is classified as a clinical disorder associated with schizophrenia, rather than a personality disorder as in DSM-5.

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95
Q

A man has asked for a consultation to discuss his concerns regarding his partner. He’s read about histrionic personality disorder, and wonders whether his partner’s struggles may be in keeping with this diagnosis. He describes her to you. Which of the following descriptions is not part of the criteria for a diagnosis of histrionic personality disorder?
Select one:
Her emotions tend to fluctuate rapidly, and others say that she can come across as quite shallow
She is easily influenced by others
She appears not to mind whether she is praised or criticised
At a party, she always talks loudly and has to be the centre of attention
She often wears revealing sexually provocative clothing

A

She appears not to mind whether she is praised or criticised

F60.4 Histrionic personality disorder
Personality disorder characterized by:
(a)self-dramatization, theatricality, exaggerated expression of emotions;
(b)suggestibility, easily influenced by others or by circumstances;
(c)shallow and labile affectivity;
(d)continual seeking for excitement and activities in which the patient is the centre of attention;
(e)inappropriate seductiveness in appearance or behaviour;
(f)over-concern with physical attractiveness.
Associated features may include egocentricity, self-indulgence, continuous longing for appreciation, feelings that are easily hurt, and persistent manipulative behaviour to achieve own needs.

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96
Q

Which of the following is true according to both the ICD-10 and DSM-IV descriptions of schizophrenia?
Select one:
Paranoid schizophrenia is not a feature
Residual schizophrenia is no longer a feature
Catatonic schizophrenia is not described
Undifferentiated schizophrenia is not described
Simple schizophrenia has been removed

A

Simple schizophrenia has been removed

Simple schizophrenia was not included amongst the schizophrenia subtypes in DSM-IV. In DSM-V, all schizophrenia subtypes have now been removed.

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97
Q

74-year-old woman, who was widowed seven years previously. She has been calling the police in order to report her neighbours, who she believes are transmitting cannabis from their flat into her water system, so that the water that emerges out of her taps smells of drugs. She believes they wish to pressure her to move out of her flat, so they can take it over and convert it into a drugs den. This is making Mrs Pozzini feel very anxious and agitated. She holds her beliefs absolutely. Which of the following criteria, according to the ICD-10, is necessary for a diagnosis of persistent delusional disorder?
Select one:
It must include a mood incongruent component
It cannot be diagnosed if the patient is living with someone else
The delusions must be present for at least one month
It can be diagnosed alongside paranoid schizophrenia
It is accompanied by a dementing illness

A

The delusions must be present for at least one month

All the others are not included in the ICD-10. The delusions are usually mood congruent. The diagnosis cannot be made alongside a diagnosis of paranoid schizophrenia or if accompanied by a dementing illness.

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98
Q

Latah is a culturally specific syndrome occurring amongst people from Southeast Asia. Under what is it classified in ICD-10?

A

Other neurotic disorder

Latah is classified under other specified neurotic disorders, along with many other culturally specific syndromes.
F48.8 Other specified neurotic disorders:
Includes:
Briquet’s disorder
Dhat syndrome
koro
latah
occupational neurosis, including writer’s cramp
psychasthenia
psychasthenic neurosis
psychogenic syncope

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99
Q

In the context of a loss event and subsequent grief, the term incentive salience refers to which of the following?
Select one:
Reality distortion in the presence of cues related to the dead person
Attentional bias towards the objects that belonged to the dead person
Cognitive bias towards the benefits of a death event
Lack of rewarding sensation from pleasurable activities
Reduced interest in items that remind us of the dead

A

Attentional bias towards the objects that belonged to the dead person

Why should a loss event make us feel sad universally? One explanation is offered through the model of incentive salience for grief (Freed and Mann, 2007). When an attachment figure dies (or leaves us), the rewarding feeling that we generally associate with the cues associated with them persists (e.g. photographs, the daily objects that they used etc.). These cues, given their associated incentive salience, automatically bias our attention towards them and trigger the unpleasant subjective yearning and sense of loss. This excessive attention toward an unavailable attachment figure serves to maintain grief’s core symptoms. Successfully reducing this elevated incentive salience during separation will help one to accept the loss. Sadness that emerges during grief reaction is an adaptive coping response, which serves to replace the association of rewarding, incentive salience with an unpleasant feeling that eventually serves to produce detachment.

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100
Q

37-year-old woman with a diagnosis of schizophrenia, who was admitted to the ward seven months previously. You are finding her speech to be unusual. Here’s an example of her communication: ‘when I went to the forest I was there by the herbal herbal bal bal balbalbal plot of land in that region, near the mountain tain tain tain tain….’. What word best describes her speech?

A

Logoclonia

In logoclonia there is meaningless repetition of the last syllables of a word or phrase.

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101
Q

43-year-old man with a long-standing history of schizophrenia. He attends clinic to see his psychiatrist. When the doctor offers to shake hands, he takes his hand 20 times but does not shake it. Which of the following best describes this phenomenon?

A

Ambitendency

Ambitendency is a phenomenon in which an individual alternates between resistance to and cooperation with instructions or prompts.

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102
Q

25-year-old man with a diagnosis of schizophrenia. He has experienced some voices and persecutory delusions but his main difficulties arise from the negative symptoms associated with his illness. Which of the following are negative symptoms of schizophrenia?
Waxy flexibility
Emotional insensitivity
Apathy
Diminished sleep
Elective mutism

A

Apathy

The negative symptoms of schizophrenia are: apathy, blunted or absent emotional responses, reduced speech, social withdrawal, diminished attention, anhedonia, sexual problems, lethargy.

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103
Q

Various forms of formal thought disorder have been described which each having distinct characteristics. Which of the following are characterised by a lack of causal links in the content of speech?
Select one:
Drivelling
Fusion
Metonymy
Asyndesis
Derailment

A

Asyndesis

Asyndesis describes a lack of genuine causal links in which clusters of more or less related sequences of thoughts, instead of well-knit sequences of thoughts are used, creating a feeling of vagueness.
Derailment is a form of thought disorder characterised by a sudden change in the train of thought and/or speech, either spontaneously or in response to an internal stimulus, from the topic’s track onto another which is obliquely related or entirely unrelated.
Metonymy involves approximate uses of words, such as paperskate rather than pen.
Fusion involves thoughts being fused together, leading to a loss of goal direction.
In drivelling there is a disordered intermixture of the constituent parts of one complex thought.

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104
Q

What best describes the sensation or concept of interoception?

A

Awareness of one’s physiological state

Interoception is defined as the sense of the internal state of the body. It encompasses the brain’s process of integrating signals relayed from the allowing for a nuanced representation of the physiological state of the body. This is important for maintaining homeostatic conditions in the body and potentially aiding in self-awareness. It is thought to be impaired in people with ASD.

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105
Q

45-year-old man who has been taken to the GP by his family, as they have been worried about him. He has been insisting that he worked at Buckingham Palace many years ago, despite having not done so and has telling people at work about it. What best describes this phenomenon?

A

Delusional memory

This is most likely to be a delusional memory. This is the symptom when the patient recalls as remembered an event or idea that is clearly delusional in nature. The delusion is retrojected in time. These are sometimes called retrospective delusions.

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106
Q

42-year-old woman who describes being able to recall daily events in great detail, “like watching a video”. What describes this form of memory?

A

Eidetic

This is most likely to represent eidetic memory, also called photographic memory. It is unclear if this is a real phenomenon.

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107
Q

Which type of formal thought disorder is characterised by two or more thoughts being interwoven into one?

A

Fusion

Fusion involves thoughts being fused together, leading to a loss of goal direction.

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108
Q

30-year-old woman who has a history of episodes of catatonic schizophrenia. She has recently been readmitted after experiencing a relapse with symptoms typical of her previous episodes of illness. Which of the following is a ICD-10 criteria for catatonic schizophrenia?
Select one:
Excitability
Mannerisms
Waxy flexibility
Reduced muscular tone
Mutism

A

Waxy flexibility

The criteria for catatonic schizophrenia are:
a. Stupor (marked decrease in reactivity to the environment and in spontaneous movements and activity) or mutism;
b. Excitement (apparently purposeless motor activity, not influenced by external stimuli);
c. Posturing (voluntary assumption and maintenance of inappropriate or bizarre postures);
d. Negativism (an apparently motiveless resistance to all instructions or attempts to be moved, or movement in the opposite direction);
e. Rigidity (maintenance of a rigid posture against efforts to be moved);
f. Waxy flexibility (maintenance of limbs and body in externally imposed positions);
g. Other symptoms such as command automatism (automatic compliance with instructions), and perseveration of words and phrases.

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109
Q

What is a method for teaching certain behaviours to children with intellectual disability in which each step gives a cue for the next action to be performed?

A

Chaining

Chaining involves breaking a complex behaviour into steps and then teaching one step at a time, adding a new one to those that have come before. The previous steps act as a prompt for the new one, thus building a chain.
Shaping involves giving positive reinforcement for approximations of a behaviour until it is mastering, e.g. congratulating a child for holding a fork when they hold it by the tines rather than the handle when teaching them to use cutlery.
Prompting involves reminding a child of what they need to be doing, however this is done.
In the context of memory retrieval, cueing is achieved via prompts or cues, which include anything that is connected in some way to target information in long-term memory, prompting retrieval of it.

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110
Q

Gestalt psychology describes 5 distinct principles of grouping. Which of the following is one of these principles?
Select one:
O Irritability
Proximity
Separation
Openness
The law of distinct fates

A

Proximity

The 5 principles of Gestalt psychology are: proximity, similarity, good continuation, closure, and the law of common fate. They were described to explain human perception of groups of objects and how we perceive parts of objects and form whole objects on the basis of these. The concept of proximity is sometimes referred to as the principle of distance.

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111
Q

Counter-conditioning is a psychological technique used in which psychotherapeutic intervention?

A

Systematic desensitisation

Counter-conditioning is a technique that is often employed as a part of systematic desensitisation when managing phobias and similar disorders. It involves the conditioning of an unwanted behaviour or response to a stimulus into a wanted behaviour or response by the association of positive actions with the stimulus. For example, when managing a phobia of dogs, a therapist may aim to associate an anxiety-provoking stimulus, such as a dog being in the next room, with a positive reward. Therefore, this will associate the positive reward with the stimulus and diminish the anxiety associated with the latter.
Wolpe, the proponent of systematic desensitization used Guthrie’s (1952) concept of counterconditioning to explain the long-term benefits of systematic desensitisation and claimed that desensitization replaced anxiety with relaxation.

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112
Q

A man and his family are preparing to travel for a family holiday. Sergio has struggled with phobias to particular situations for which he’s engaged in some behavioural therapy (relaxation training, exposure and response prevention) with a good outcome. His fear of snakes has subsided, but he discovers that other members of his family, even though they’ve not struggled with anxiety to the extent he has, also seem to have an aversive reaction to the sight of snakes. What theory can explain this phenomenon?

A

Stimulus preparedness

Stimulus preparedness implies that fear-relevant stimuli are biologically prepared, as opposed to only occurring in those who already fear snakes.

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113
Q

Which of the following best describes the Hawthorne Effect?
Select one:
Academic performance based on the expectation of others
Belief that an individual’s behaviour is representative of the behaviour of a group Tendency to perceive someone as wholly bad based on a small number of attributes
Not helping someone in need due to the presence of others
Temporary increase in work performance due to the presence of others

A

Temporary increase in work performance due to the presence of others

The Hawthorne effect describes the phenomenon of individuals or a group changing their behaviour in response to being observed. The bystander effect is a social psychological phenomenon in which individuals are less likely to offer help when other people are present.
The horn effect, closely related to the halo effect, is a form of cognitive bias that causes one’s perception of another to be unduly influenced by a single negative trait. The Pygmalion effect, or Rosenthal effect, is a psychological phenomenon wherein high expectations lead to improved performance in a given area. The targets of the expectations internalise their positive labels, and those with positive labels succeed accordingly; a similar process works in the opposite direction in the case of low expectations.
The group attribution error refers to people’s tendency to believe either (1) that the characteristics of an individual group member are reflective of the group as a whole, or (2) that a group’s decision outcome must reflect the preferences of individual group members, even when external information is available suggesting otherwise.

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114
Q

75-year-old man who has been subject to a cerebro-vascular event affecting his medial parietal lobe. You wish to test some of his cognitive capacities. You present him with a list of words and ask him to read them through. You then show him a second list and ask him to discern which of the words he sees are on both lists. What aspect of cognitive functioning are you testing?

A

Recognition

The scenario describes one of the simplest forms of testing for recognition, which makes the retrieval process easy to record and analyse.

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115
Q

Which of the following persists after ECT?
General confusion
Retrograde amnesia
Disorientation to place
Anterograde amnesia
Disorientation to time

A

Retrograde Amnesia

Retrograde amnesia, particularly for autobiographical memory is the most persistent complication after ECT. Confusion and disorientation usually resolves within 24-48 hours. Anterograde amnesia usually resolves within few weeks.

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116
Q

This type of aggression is often planned and may be used to attain a goal
Select one:
Positive aggression
Overt aggression
Hostile aggression
Instrumental aggression
Covert aggression

A

Instrumental aggression

Instrumental aggression is used with a specific goal in mind, such as obtaining money in the course of an armed robbery.
Hostile aggression is in response to a stimulus or provocation.
Aggression can be overt and easily identifiable, or covert and “passive-aggressive”, e.g. bullying.

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117
Q

Which of the following is true regarding self-serving bias?
Select one:
It is a type of attribution error
It attributes internal failures to internal sources
It occurs in depression
It is a form of self-compassion
It attributes external success to external sources

A

It is a type of attribution error

Some people attribute their successes to internal factors and their failures to external factors. It is called the self-serving bias, which helps to boost self-esteem.

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118
Q

The tendency for a group to make more risky decisions than individuals otherwise would make is known as

A

Risky shift

Risky shift describes the phenomenon whereby a group will make more risky decisions than an individual.
This is similar to group polarisation in which a group makes more extreme decisions than the individuals would, but in terms of their initial inclination, either cautious or risky.

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119
Q

17-year-old who recently sat her school exams. For the past three months, following the separation of her parents, she’s been feeling demotivated, finding it difficult to concentrate on her studies, feeling lethargic, sleeping more than usual. With her close friend Tamara, she goes to school to pick up their exam results. They both get a C as their final result. Tamara says that the reason she got a C is because their teacher was useless and didn’t explain the concepts required for the exam clearly enough; she’s sure that based on her own capacities, had she been properly coached, she would have achieved an A grade. Wynne on the other hand, isn’t surprised by her grade, and thinks that it’s her own incompetence that meant she didn’t get a higher grade. This scenario illustrates the concept of:

A

Self-serving bias

Self-serving bias is a type of cognitive bias in which positive events are attributed to one’s own character, and negative events to external factors. This can be reversed in depression.

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120
Q

Minority influence is a form of social influence whereby an individual or minority group persuades the majority to accept their beliefs or behaviour. Which of the following increases minority influence?
Select one:
Not being flexible
Emphasising their difference from the majority
Being consistent
Hostility to majority figureheads
Disregarding the majority view

A

Being consistent

Minority influence is increased by consistency in messaging, flexibility, appealing to the majority view and persuading majority figureheads to help propagate their views. If the minority is seen as being more similar to the majority, it also increases their influence.

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121
Q

When there is a discrepancy between co-existing but contradictory beliefs or attitudes, which of the following is an individual most likely to do?
Select one:
Seek information about the dissonant belief
Change one of their beliefs or attitudes
Discuss their difficulty with others
Weigh the available information objectively
Emphasise the importance of the contrast

A

Change one of their beliefs or attitudes

Individuals experiencing cognitive dissonance can resolve this by:
* Changing behaviours
* Changing beliefs or attitudes to reduce the dissonance
* Reduce the importance of the dissonance
* Ignore information that emphasises the dissonance
Of these, changing behaviours is the least likely to occur. Individuals do not tend to acknowledge the dissonance explicitly as this would involve recognising that their thoughts
are contradictory, which is psychologically threatening. They are most likely to change their beliefs or attitudes to reduce the dissonance.

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122
Q

There is evidence from sociopsychological studies that when individuals believe that someone else can respond to a situation, they are less likely to respond. What describes this phenomenon?

A

Diffusion of responsibility

Diffusion of responsibility describes the phenomenon of a person being less likely to take responsibility for action or inaction when others are present. It is considered a form of attribution as the individual assumes that others either are responsible for taking action or have already done so.

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123
Q

Asch’s studies of group dynamics focused around conformity and integration. According to his theories, which of the following would lead to disintegration of a group?
Select one:
Difficult work
Larger group size
Younger age
More public interactions
Equality between members

A

Equality between members

Asch theorised that group conformity was more likely with larger numbers, more challenging tasks, conversations being more public and individuals perceiving other members as being more senior than them.

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124
Q

Social pressure within groups can have a significant impact on the attitudes and behaviours of an individual. Which of the following would increase the likelihood of an individual expressing ambivalence?
Select one:
Feels less identified with group
The presence of a charismatic leader
There is a high degree of agreement in the group
Need to appear as part of the group
Need to promote harmony within the group

A

Feels less identified with a group

A lesser degree of identification with a given group increases the likelihood an individual will express ambivalence or a dissenting opinion.

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125
Q

12-year-old girl who is increasingly influenced by her peers and generally tries to act in a way that others will approve of. According to Kohlberg’s theory of moral development, which stage is she going through?

A

Interpersonal accord and conformity

She is likely in the conventional stage of interpersonal accord and conformity, or the good boy/girl orientation whereby individuals conform to social standards and are receptive to approval or disapproval from others as it reflects society’s views. They try to be a “good boy” or “good girl” to live up to these expectations having learned that being regarded as good benefits the self.

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126
Q

Which of the following is true about ethnic differences in access to mental health services in the UK?
Select one:
Most ethnic minorities that receive mental health care do so via their general practitioners Among the different ethnic groups, anxiety and depression are highest among white women Cultural competence of the providers does not affect access to care
Black and South Asian individuals are less likely to obtain mental healthcare
Psychotic disorders are less often diagnosed among black men

A

Black and South Asian individuals are less likely to obtain mental healthcare

Among BME communities, mental illnesses are more prevalent but less treated.
There is relatively higher prevalence of anxiety and depression in South Asian women (63.5% compared with 28.5% of white women), and psychotic disorders in Afro- Caribbean men (3.1% compared with 0.2% of white men).
In general, people from ethnic minorities are less likely than their White British counterparts to have contacted their GP about mental health issues in the last year, to be prescribed antidepressants, or to be referred to specialist mental health services. There is some evidence that hard-to-reach groups, including BME, are less likely to obtain appropriate mental healthcare and may be disadvantaged either because they are unable to access services or because they receive inadequate help from services. Factors considered important barriers to accessing services include cultural competence (i.e. the ability of providers and organisations to effectively deliver healthcare services that meet the social, cultural and linguistic needs of patients); cultural models of illness; stigma; fear and perceived discrimination and barriers to communication.

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127
Q

35-year-old Senegalese man who is brought to A&E by his family after becoming suddenly aggressive to his wife. He accused her of being a witch and tried to exorcise demons from her. He claimed to have seen the demons and became agitated and distressed. Which culture-bound syndrome best fits this description?

A

Bouffée délirante

Bouffée délirante describes sudden attacks of brief duration with paranoid delusions and often concomitant hallucinations, typically precipitated by an intense fear of magical persecution through sorcery or witchcraft. It is a syndrome occurring in Francophone West Africa and Haiti.

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128
Q

Which term is used to describe social disadvantage as a result of disability?

A

Handicap

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129
Q

Which of the following is FALSE about the concept of high expressed emotion?
Select one:
Patients with schizophrenia whose families have high expressed emotion are at an increased risk of relapse
In patients with schizophrenia whose families have high expressed emotion, males have a higher risk of relapse than females
The domains of critical comments, emotional over-involvement and hostility were most predictive of relapse
The proportion of high expressed emotion in carers of patients with schizophrenia is over 50%
Expressed emotions are measured using the Camberwell Family Interview

A

In patients with schizophrenia whose families have high expressed emotion, males have a higher risk of relapse than females

There is no evidence for a difference in the rate of relapse for men and women with schizophrenia exposed to high expressed emotion.

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130
Q

33-year-old Kashmiri man who works in an office in London. He speaks fluent English and often goes to the pub with his colleagues after work. At home, he speaks fluent Kashmiri and attends mosque with his family. In terms of culture he can be said to be:

A

Integrated

Cultural integration is a form of cultural exchange in which one group assumes the beliefs, practices and rituals of another group without sacrificing the characteristics of its own culture.

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131
Q

Which of the following is not true about Kohlberg’s theory of moral development?
Select one:
The stages are not culturally neutral
Individuals cannot skip stages
Individuals in conventional stages compare their actions with views of society
Individuals can display features of more than one stage at a time
All adults reach the post-conventional stage

A

All adults reach the post-conventional stage

All adults do not reach the post-conventional stages of moral development. At the same time, people in different cultures seem to move through the sequence at different rates and to reach different end-points. Edwards et al., in 1980, reported that in the West, most urban middle-class adults reach stage 4 (conventional), with a small percentage using some stage 5 (post-conventional) reasoning. In the isolated villages and tribal communities of many countries, however, it is rare to find any adult beyond Stage 3.

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132
Q

20-year-old woman with a diagnosis of anorexia nervosa who has been referred for a psychological assessment. Which of the following defence mechanisms is she most likely to utilise?
Denial, projection
Denial, rationalization
Splitting, acting out
Projection, splitting
Fantasy, avoidance

A

Denial, rationalization

Denial, rationalisation and intellectualisation are commonly seen in patients with anorexia nervosa.

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133
Q

78-year-old man who has brought his wife to the GP because he is concerned about some paranoid ideas she has been having. He matter-of-factly tells the GP about why he thinks she is behaving like this, and where the ideas might have come from. The defence mechanism he is utilizing is:

A

Intellectualisation

Intellectualisation is a form of defence mechanism where an individual concentrates on the intellectual components of a situation so as to distance oneself from the associated anxiety-provoking emotions.
Rationalisation is a defence mechanism where the individual devises reassuring or self-serving but incorrect explanations for his or her own or others’ thoughts, actions, or feelings.

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134
Q

Which of the following is NOT a Kleinian defence?
Select one:
Denial
Projective identification
Introjection
Isolation
Splitting

A

Isolation

Isolation is not a Kleinian defence. It is characterised as a mental process involving the creation of a gap between an unpleasant or threatening cognition, and other thoughts and feelings. By minimising associative connections with other thoughts, the threatening cognition is remembered less often and is less likely to affect self-esteem or the self- concept. The other defences listed are more primitive and were addressed more by Klein in her work with children.

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135
Q

Which of the following defences is known as the Primary Defence?
Select one:
Isolation
Repression
Denial
Splitting Suppression

A

Repression

Repression has been referred to the Primary Defence for the unconscious as it involves preventing thoughts or impulses becoming conscious.

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136
Q

Which of the following is a mature defence?
Select one:
Somatisation
Splitting
Intellectualisation
Suppression
Acting out

A

Suppression

Suppression is the conscious decision to delay paying attention to a thought, emotion, or need in order to cope with the present reality; making it possible later to access uncomfortable or distressing emotions whilst accepting them.

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137
Q

According to Freud’s dual instinct theory, which of instinct is the dominant instinct in human psychology?

A

Thanatos

Dual instinct theory looks at Eros and Thanatos as life and death instincts. Freud believed that Thanatos underlay and accompanied Eros and so could be seen as more primal.

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138
Q

15-year-old boy who has had an argument with his mother about mess in his room and later cleans it without being asked. Which defence is he most likely to be utilising?

A

Undoing

In undoing an individual tries to “undo” an unhealthy, destructive or otherwise threatening thought by acting out the reverse of the unacceptable. It involves symbolically nullifying an unacceptable or guilt provoking thought, idea, or feeling by confession or atonement.

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139
Q

Some animals demonstrate the phenomenon of perceiving the first moving object they see after birth as being their mother. What best describes this?

A

Imprinting

This describes filial imprinting that is often seen in birds. Newly hatched chicks will identify an object seen after birth as their mother and follow it persistently. This tends to occur within a certain critical time period shortly after hatching. More generally, imprinting is any kind of phase-sensitive learning (learning occurring at a particular age or a particular life stage) that is rapid and apparently independent of the consequences of behaviour.

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140
Q

Identify the obstructive technique that may hamper information sharing

“Do you take a proper break from work every six months and are you able to relax?”

A

Polythematic questions

Compound or polythematic questioning is adding two or more questions in a single statement. This interview technique confuses the patient and will lead to either a vag response or non-response.

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141
Q

Identify the obstructive technique that may hamper information sharing

“These voices, which you are describing, are not from your head. Am I right?”

A

Suggestive questions

In suggestive questions, the answers are contained in the question. It misleads both the patient and the doctor. The patient is left with little choice.

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142
Q

Identify the obstructive technique that may hamper information sharing

When the patient stated, ‘Over the last four weeks I have had trouble with my sleep’, the doctor replied ‘We are here to talk about your mood.’

A

Disapproval

Disapproval is expressing unhappiness with a topic that the patient wants to discuss; may lead to withdrawal and not revealing the important problem faced by the patient

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143
Q

Identify the obstructive technique that may hamper information sharing

“You wanted to see me as nothing had gone well for you. But you just mentioned that you have got a new job and entered into a new relationship.”

A

Setting traps

Setting traps is tricking the patient using his words. Often seen as doctor’s attempt to negate patient’s problems.

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144
Q

Electrolyte abnormality

What electrolyte abnormality could be expected in a 52-year-old woman under the oncologists for breast cancer complains of being excessively thirsty

A

Hypercalcaemia

Polydipsia is a common symptom of hypercalcaemia. Hypercalcaemia is relatively common in cancer (20-30% of cancer patients develop hypercalcaemia). The most common cancers associated with hypercalcaemia are breast and lung cancer, and multiple myeloma.

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145
Q

Electrolyte abnormality

What electrolyte abnormality could be expected in a 22-year-old man, was brought into A&E in a coma. His friend said that they had been at a rave where he thinks the patient may have taken something. He describes him as being very chatty and overfamiliar. He said that because he had a lot of alcohol before, his friends encouraged him to drink lots of water to sober up.

A

Hyponatraemia

He has likely taken MDMA which results in chatty and overfamiliar behaviour, and excessive thirst. He has developed hyponatreamia secondary to over- drinking water due to this excessive thirst. MDMA also causes syndrome of inappropriate antidiuretic hormone (SIADH) which contributes to hyponatremia.

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146
Q

Electrolyte abnormality

What electrolyte abnormality could be expected in a 19-year-old woman, is under her GP for low mood. In the past she suffered from bulimia and struggles with her weight. Her boyfriend broke up with her a few days ago. Her friend Jess brings her to A&E as Jess noticed Lena was a little confused. She also has a tremor and some numbness and is dizzy.

A

Metabolic alkalosis

Metabolic alkalosis is associated with excessive vomiting. In this case, it is likely that Lena has started to binge and purge following the breakdown of her relationship putting her at risk of developing metabolic alkalosis.

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147
Q

Movement disorders

What movement disorder that matches the description - A man who kicks his wife once as he falls asleep.

A

Sleep myoclonus/hypnic jerk

Sleep myoclonus/hypnic jerk is an involuntary twitch that occurs just as a person is beginning to fall asleep

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148
Q

Movement disorders

What movement disorder that matches the description - A man on psychotropic medication for a long time who sleeps badly, wakes with a stiff back in the morning and takes at least 10 minutes to get out of bed

A

Parkinsonism

Parkinsonism is associated with antipsychotic medication resulting in stiffness, bradykinesia and tremor

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149
Q

Movement disorders

What movement disorder that matches the description - A man who experiences slow writhing movements in peripheral limbs

A

Athetosis

Athetosis is slow involuntary writing movements of the limbs caused by degeneration of the basal ganglia, as seen in Huntington’s disease. It can also be secondary to stroke or trauma.

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150
Q

Personality disorder

If all the general criteria for a personality disorder were met, what personality disorder would the traits described be indicative of?
He is berated by some of his acquaintances for holding onto money very tightly. He claims he has to hold onto it for future catastrophies, and will never offer to pay for someone else’s drink. He is regarded as miserly and uptight.

A

Anankastic personality disorder

Anankastic personality disorder: Traits include a preoccupation with orderliness and control (including over money), at the expense of flexibility. Rules are very rigidly maintained.

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151
Q

Personality disorder

If all the general criteria for a personality disorder were met, what personality disorder would the traits described be indicative of?
She is often at the centre of any party, and cannot bear to be overlooked or ignored. She makes sure she’s the centre of attention by wearing provocative clothes, laughing loudly and talking copiously and vivaciously.

A

Histrionic personality disorder

Histrionic personality disorder: Traits include excessive attention-seeking emotions including inappropriately seductive behaviour.

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152
Q

Personality disorder

If all the general criteria for a personality disorder were met, what personality disorder would the traits described be indicative of?
He always seems to have several girlfriends, often at the same time. They find him attractive and seductive, and he impresses them with his stories of evading the law for his own profit. The relationships don’t last long and Mike doesn’t seem bothered when they come to an end

A

Antisocial personality disorder

Antisocial personality disorder: Traits include ease on forming relationships, but not keeping them, superficial charm, lack of remorse for criminal or law-breaking activity, disregard for the rights of others.

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153
Q

Personality disorder

If all the general criteria for a personality disorder were met, what personality disorder would the traits described be indicative of?
He demonstrates the self-perception of being unique and superior to his peers.

A

Narcissistic personality disorder

Narcissistic personality disorder can be recognised by elevated sense of importance and significance compared to others.

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154
Q

Personality disorder

If all the general criteria for a personality disorder were met, what personality disorder would the traits described be indicative of?
She is persistently unreliable at work and has poor control of her finances

A

Emotionally unstable personality disorder

Emotionally unstable personality disorder usually involves marked impulsivity and a desultory approach to life; this usually leads to difficulties with finances and at work.

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155
Q

Diagnosis of acute disturbances

What would be the most likely diagnosis?
74-year-old woman who has recently had an elective hip replacement. Whilst on the orthopaedic ward she develops confusion, dyspnoea and chest pain 3 days postoperatively.

A

Pulmonary embolism

Chest pain and dyspnoea would make a pulmonary embolus likely. Significant hypoxia could lead to confusion.

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156
Q

Diagnosis of acute disturbances

What would be the most likely diagnosis?
6-year-old girl whose parents take her to the GP after they and her teachers notice that she is exhibiting episodes of blank staring and unresponsiveness lasting 10 to 15 seconds, which Helen is unaware of

A

Absence seizures

Describes absence seizures (also known as petit mal seizures) with classic brief periods of unresponsiveness but without any movement abnormalities.

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157
Q

Diagnosis of acute disturbances

32-year-old woman with a diagnosis of bipolar affective disorder. She develops coarse tremor and ataxia after going for a run whilst staying at her holiday let in Spain during her summer holiday.

A

Lithium toxicity

Llikely lithium toxicity due to dehydration. The patient has exerted themselves in a warm environment and has experienced fluid loss as a result.

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158
Q

Anxiety disorders

What is the most likely diagnosis?
A young man attends a CAMHS clinic. He has recently changed schools due to experiencing several difficulties. He also refuses to go out with friends or parents because he finds it uncomfortable to eat in front of people

A

Social phobia

diagnosis of social phobia or social anxiety characterised by difficulties in a school or social environment.

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159
Q

Anxiety disorders

What is the most likely diagnosis?
22-year-old who has been experiencing a two-week history of low mood, nervousness, poor concentration and hopelessness following the breakdown of her relationship with her boyfriend three months ago.

A

Adjustment disorder

suffering from adjustment disorder, which occurs up to 3 months (usually within 1 month) after a stressor and does not persist for more than 6 months after the
stressor.

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160
Q

Anxiety disorders

What is the most likely diagnosis?
15-year-old who attends CAMHS clinic following a change in behaviour; her parents describe that she often blinks repeatedly or counts on her fingers. Lauren eventually confides that she repeatedly sees horrible images in her head

A

Obsessive-compulsive disorder

a diagnosis of obsessive-compulsive disorder describing obsessional intrusive thoughts and counting compulsions.

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161
Q

Gait disorders

What is the likely diagnosis for this scenario
56-year-old woman who has been experiencing difficulties in starting to walk although she has little difficulty with movements involving her arms. She has no tremors of note.

A

Normal pressure hydrocephalus

Difficulty in gait initiation is typical in normal pressure hydrocephalus. It can also occur in Parkinsonism but difficulty in initiating movements tends to occur similarly in upper and lower limbs.

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162
Q

Gait disorders

What is the likely diagnosis for this scenario
19-year-old man who has long-standing difficulties with mobility. He walks in a semi-crouched state and his lower legs tend to cross over each other as he walks

A

Cerebral palsy

A gait in which the legs cross over or scissor is typical of an upper motor neurone lesion, particularly in cerebral palsy.

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163
Q

Gait disorders

What is the likely diagnosis for this scenario
45-year-old man who has been experiencing a gradual deterioration in his ability to walk. His steps are chaotic and variable in length and impaired by uncontrolled movements of his limbs at points.

A

Huntington’s disease

A chaotic gait impaired by choreic movements is characteristic of Huntington’s disease.

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164
Q

Gait disorders

What is the likely diagnosis for this scenario
72-year-old woman who has long-standing difficulties with mobilising. She walks bent forward and sometimes takes numerous small steps, seemingly to catch up with her body’s momentum.

A

Parkinson’s disease

A festinate gait is characterised by rapid small steps done in an attempt to keep the centre of gravity in between the feet while the trunk is leaning forward involuntarily and is classical in Parkinson’s disease and similar disorders.

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165
Q

Gait disorders

What is the likely diagnosis for this scenario
68-year-old woman who presents to her GP with a sudden onset difficulty in walking that started 2 days ago. She seems to be uncertain in her gait and places her feet far apart when taking a stride. She cannot stand with her feet together.

A

Cerebellar dysfunction

This scenario describes a broad-based gait and symptoms suggestive of truncal ataxia, both of which are associated with cerebellar disease.

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166
Q

Receptor mechanisms

This refers to the amount of the drug needed to produce a particular effect compared to another standard drug with similar receptor profile

A

Potency

Potency of a drug with receptor binding action refers to the amount of the drug needed to produce a particular effect compared to another standard drug with similar receptor profile (‘vigor’).

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167
Q

Receptor mechanisms

This refers to the ability of the drug to bind to its appropriate receptor

A

Affinity

Affinity refers to the ability of the drug to bind to its appropriate receptor (‘affection’).

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168
Q

Receptor mechanisms

This refers to how well the drug produces the expected response

A

Efficacy

Efficacy refers to how well the drug produces the expected response i.e. the maximum clinical response produced by a drug (‘productivity’).

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169
Q

Class of Antipsychotics

Give an example of a phenothiazine compound

A

Chlorpromazine, prochlorperazine, promazine, thioridazine or fluphenazine

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170
Q

Class of Antipsychotics

Give an example of a butyrophenone compound

A

Haloperidol, droperidol or benperidol

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171
Q

Class of Antipsychotics

Give an example of a dibenzodiazepine compound

A

Clozapine

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172
Q

Class of Antipsychotics

Give an example of a dibenzothiazepine compound

A

Quetiapine

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173
Q

Mechanism of action

Which drug is a partial D2 agonist?

A

Aripiprazole

From a pharmacological perspective, aripiprazole is different from other antipsychotic agents, as it is the only approved antipsychotic that reduces dopaminergic neurotransmission through D2 partial agonism, not D2 antagonism.

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174
Q

Name a 5HT1A agonist?

A

Buspirone

Buspirone is a full agonist at presynaptic 5-HT1A receptors and a partial agonist post-synaptically.

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175
Q

Name a multimodal agent that acts on 5HT1A autoreceptor as well as the serotonin transporter?

A

Vortioxetine

Vortioxetine is a relatively new antidepressant that acts on the serotonin transporter (SERT) to reduce reuptake, in line with SSRIs. In addition, it also acts as an agonist of 5- HT1A on the presynaptic neuron, in line with pindolol and buspirone. This prevents the desensitization of this autoreceptor, and thus accelerates the antidepressant effects.

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176
Q

Name an antipsychotic which binds to D1 receptors and binds with high affinity to 5HT2A receptors?

A

Olanzapine

Olanzapine binds with high affinity to the following receptors: serotonin 5HT2A/2C, 5HT6, dopamine D1-4, histamine H1, and adrenergic a1 receptors.

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177
Q

Neurohistology

Each of the cell types in the central and peripheral nervous systems have particular characteristics. Which 2 cell types commonly use glutamate as a neurotransmitter?

A

Granular and Pyramidal cells

Numerous neurons utilise glutamate as a neurotransmitter, including granular and pyramidal cells. Glutamate is also shuttled via astrocytes, though these cells do not use glutamate as a neurotransmitter primarily.

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178
Q

Neurohistology

Each of the cell types in the central and peripheral nervous systems have particular characteristics. Which cell type transmits motor signal from the cortex to the spinal cord?

A

Pyramidal cells

Pyramidal cells, particularly Betz cells, are part of the corticospinal tracts that conveys motor signals from the motor cortex to the spinal cord.

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179
Q

Neurohistology

Each of the cell types in the central and peripheral nervous systems have particular characteristics. Which cell type lines the cerebral ventricles?

A

Ependymal cells

Ependymal cells line the cerebral ventricles.

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180
Q

Neuropharmacology

Medications used in psychiatric practice often cause side effects, either because of their effects on target receptors in different areas of the body or affinity to non-target receptors. Which receptor is associated with the below side-effects?
32-year-old woman taking amisulpride who attends clinic and informs you that her periods have stopped.

A

D2 receptor

Most antipsychotics block D2 receptors and have the potential to cause hyperprolactinaemia due to blockade in the pituitary. This is more frequent in patients taking amisulpride, risperidone, paliperidone or a first generation antipsychotic. Common consequences of this are infertility and osteoporosis in the long-term. Galactorrhoea is also possible in both men and women.

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181
Q

Neuropharmacology

Medications used in psychiatric practice often cause side effects, either because of their effects on target receptors in different areas of the body or affinity to non-target receptors. Which receptor is associated with the below side-effects?
52-year-old man who has started a new medication but describes episodes of dizziness in the mornings or when standing up

A

Alpha-1-adrenergic receptors

The scenario appears to describe episodes of postural hypotension which can be linked to antagonism of alpha-1-adrenergic receptors. TCAs, mirtazapine and some antipsychotics are associated with this effect.

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182
Q

Neuropharmacology

Medications used in psychiatric practice often cause side effects, either because of their effects on target receptors in different areas of the body or affinity to non-target receptors. Which receptor is associated with the below side-effects?
68-year-old man who has started taking an antidepressant he had many years ago. He attends his GP reporting difficulty-voiding urine.

A

Muscarinic receptors

Antimuscarinic effects, which are common side-effects of TCAs, can cause urinary retention, as well as dry mouth, blurred vision and a variety of other effects.

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183
Q

Neuropharmacology

Medications used in psychiatric practice often cause side effects, either because of their effects on target receptors in different areas of the body or affinity to non-target receptors. Which receptor is associated with the below side-effects?
45-year-old woman who has been on a medication for 6 weeks but is keen to change to an alternative as she finds she is sleeping excessively and finds it difficult to wake in the mornings.

A

Histamine receptors

Histamine antagonism, such as that caused by mirtazapine, can cause marked sedation, which some patients find undesirable. Promethiazine and quetiapine also have this effect.

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184
Q

Function of Neuroglial cells

Cells which provide myelination to central nervous system

A

Oligodendrocytes

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185
Q

Function of Neuroglial cells

Cells which provide myelination to peripheral nervous system

A

Schwann cells

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186
Q

Function of Neuroglial cells

Cells which transport glutamate to promote clearance from synapse

A

Astrocyte

Rapid removal of glutamate from the synaptic space is required for the survival of releasing neurons. Although glutamate transporters are expressed by all CNS cell types, astrocytes are the cell type primarily responsible for glutamate uptake.

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187
Q

Function of Neuroglial cells

Cells which line the ventricles of the brain and the central canal of spinal cord

A

Ependymal cells

Ependymal cells line the CSF filled ventricles in the brain and the central canal of spinal cord.

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188
Q

Memory

Match the description with the correct type of memory
Remembering how to eat breakfast.

A

Procedural memory

Procedural memory, or ‘knowing how’, is the unconscious memory of skills and how to do things. It is acquired through repetition and practice.

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189
Q

Memory

Match the description with the correct type of memory.
Remembering what you ate for breakfast.

A

Declarative memory

Declarative memory is memory of facts and events that can be consciously recalled (also known as explicit memory).

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190
Q

Memory

Match the description with the correct type of memory.
Remembering what breakfast is.

A

Semantic memory

Semantic memory is a structured record of meanings, concepts, facts, knowledge about the world; it’s to do with general factual knowledge that is shared with others, independent of personal experience.

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191
Q

Memory

Match the description with the correct type of memory.
Remembering after you have eaten breakfast that you need to pick up more cereal on your way home from work.

A

Prospective memory

Prospective memory refers to that which needs to be remembered in the future, and may be defined as ‘remembering to remember’; it can be either event-based or time- based, and is often triggered by a cue (e.g. finishing breakfast).

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192
Q

Memory

Match the description with the correct type of memory.
Remembering that after breakfast you took your bike out and cycled your usual route to work, and this felt tedious.

A

Episodic memory

Episodic memory refers to experiences and specific events in time in serial form, from which we can reconstruct the actual events that took place in our lives; it is the memory of autobiographical events, and has an emotional charge.

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193
Q

Which of the following defence mechanisms is most prominent in subjects with narcissism?
Select one:
Idealisation
Discrimination
Acting out
Anticipation
Projection

A

Projection

Projection is commonly seen in narcissism. It involves taking one’s own unacceptable qualities or feelings and ascribing them to other people. For example, a narcissist with a strong dislike for someone, might instead believe that the other person does not like him. Narcissistic defences include the following:
1. repression
2. denial
3. rationalisation
4. projection

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194
Q

Avoidance is a defence mechanism most commonly used in:
Select one:
OCD
Agoraphobia
Hypochondriasis
Somatoform disorder
Depression

A

Agoraphobia

Avoidance is a powerful cognitive and behavioural strategy that serves as a negative reinforcer to reduce anxiety associated with agoraphobia.
(Most questions on defence mechanism/cognitive styles are based on psychotherapeutic theoretical grounding; not on quantitative evidence regarding frequency and prevalence)
F40.0 Agoraphobia include fears not only of open spaces but also of related aspects such as the presence of crowds and the difficulty of immediate easy escape to a safe place (usually home). The term therefore refers to an interrelated and often overlapping cluster of phobias embracing fears of leaving home: fear of entering shops, crowds, and public places, or of travelling alone in trains, buses, or planes.

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195
Q

Which of the following is true regarding adult personality over time?
Select one:
Males become more introverted with age
Neuroticism increases with age in men
Females show a significant decline in psychoticism but not neuroticism with age
Extraversion increases with age in men
Males show a significant increase in psychoticism with age

A

Males become more introverted with age

Males and females both show a decrease in extraversion, neuroticism and psychoticism with ageing.

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196
Q

In Piaget’s model of cognitive development, in which of the following stages does ‘conservation’ appear?

A

Concrete operational stage

Lack of conservation, presence of centration, irreversibility, class inclusion, and transitive inference are all characteristics of preoperative thought. The preoperational stage lasts from around 2-7 years of age.
Most children learn the rules for conservation at concrete operational stage (age 7 onwards).

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197
Q

Children often go through a process of using an item or non-physical object as a buffer between fantasy and reality during periods of anxiety. What is this phenomenon?

A

Transitional object

Infants initially have a period of so-called subjective omnipotence as their desires are fulfilled seemingly automatically, despite the objective reality being different. Realising that they are separate to their mothers or other caregivers can be distressing for the infant as they are reliant on another for their needs. Through fantasizing about the object of its wishes the child will find comfort. A transitional object can be used in this process. Donald Winnicott described this phenomenon.
Winnicot observed that the transitional object may be any material object (often a blanket, piece of cloth or a soft toy) to which young children frequently develop intense, persistent attachments. This object would be manipulated, sucked, or stroked, and often became an indispensable aid for falling asleep.

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198
Q

Rapprochement refers to a development stage in Mahler’s separation-individuation theory, which occurs between the ages of

A

14-24 months

Rapprochement refers to a development stage in Mahler’s separation-individuation theory, which occurs between 14-24 months. The child uses the caregiver as a base for exploration and frequently returns to them for reassurance whilst exploring their environment.

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199
Q

In Margaret Mahler’s Separation-Individuation Theory, at what age is a child in the Object Constancy Subphase?

A

2 years - 5 years

In Margaret Mahler’s Separation-Individuation Theory successful completion of this phase marks the development of an internalized mental model of the mother, which unconsciously accompanies and supports the child even when they are physically separated. In addition, a sense of individuality begins to develop. The degree of ambivalence in the internalized model implicates the formation of a healthy self-concept and self-confidence.

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200
Q

A woman has sons aged 14 and 19, who are proving to be strong-willed and determined young men. She perceives a difference between the behaviours and mindset of her 14-year-old compared with that of her 19-year-old. She wonders about the effect of puberty of their developing brains, and what sorts of changes occur in the brain, that distinguish adolescence from adulthood. Which of the following statements regarding brain changes from adolescence to adulthood is correct?

A

Decrease in grey matter and increase in white matter

Between adolescence and adulthood the brain undergoes synaptic pruning, resulting in a steady decline of grey matter.
Myelogenesis is active during childhood and adolescence, peaking in the third decade of life, then decreases.

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201
Q

You are preparing a lecture on personality disorder for medical students, and you come across studies involving newborn rhesus monkeys, used by Harlow in the 1950s and 1960s in order to illustrate and contribute to the development of which of the following psychological concepts?

A

Attachment

Harlow studied the mechanism by which newborn rhesus monkeys bond with their mothers, suggesting that attachment develops as a result of tactile comfort, and not just the provision of food.

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202
Q

Ainsworth constructed a strange situation experiment with X separation and X reunion episodes?

A

2 separation and 2 reunion episodes

Ainsworth constructed a strange situation experiment with 2 separation and 2 reunion episodes. It is a controlled observation carried out in a comfortable room equipped with toys. An infant is observed in the presence and absence of its mother and a stranger in the vicinity in seven different combinations.
According to the infant’s behaviour it is classified as type A, B or C.
A- Anxious avoidant
B-Secure
C- Anxious resistant

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203
Q

Gender identity in a normal child develops around

A

3-4 years of age

Gender identity refers to the unshakable self-conviction of being male or female that begins around 18 months and gets fixed by 24 to 30 months. By age 3, most children are able to label themselves as either a boy or a girl. Most children develop stable sense of gender identity by age 4.

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204
Q

At what age can a child copy a circle with crayon?

A

2-3 years

In terms of fine motor skills, a child can copy a straight line with a crayon. By 30 months (2.5 years), he or she tries to copy a circle and a plus sign.

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205
Q

The range of pubertal time period in a boy lasts for duration of:

A

2-3 years

Boys enter puberty at an average age of 11-12 (one year later than girls) but this may occur anytime.
One of the largest cohorts of the pubertal adolescents reported so far has estimated the duration of puberty in boys to be around 2.4 years; in girls about 1.9 years. In this study, duration was defined by the difference in ages at onset of a pubertal growth spurt (OGS) and peak height velocity (PHV). Depending on the method used, the duration of puberty varies between 2 to 3 years in both sexes, with boys having longer duration than girls consistently (refer to Tanner’s method and Gasser’s method for further discussion).

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206
Q

Which of the following is INCORRECT with regards to child development?
Select one:
A 2-year-old child can say more than 50 words
A 5-year-old child can tell time by quarter of an hour accuracy
A 12-month-old child can speak up to 3 words
A child starts babbling at 4 months of age
A 4-year-old child speaks with correct grammar

A

A 5-year-old child can tell time by quarter of an hour accuracy

Reception class children (ages 4-5) should be beginning to read the time to the hour.
Year 1 children (ages 5-6) should be able to read the time to the hour or the half hour on analogue clocks.
Year 2 children (ages 6-7) should be able to read the time to the hour, half hour or quarter hour on analogue clocks.

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207
Q

When children are hospitalised for physical health problems, a short period of separation from their primary care giver ensues. This temporary separation from their loved one can cause

A

Anaclitic depression

Spitz described this. When children are hospitalised for physical health problems, a short period of separation from primary caregiver ensues; this loss produces anaclitic (object loss) depression. It is thought to be counterproductive to a child’s development. But recovery can be very good if maternal deprivation is kept to a minimum i.e. less than three months. To some extent, surrogate mothering can help an infant experiencing anaclitic depression.

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208
Q

A 4-year-old child asks ‘When do clouds sleep, papa?’ Which of the following features is she exhibiting?

A

Animism

Animism refers to the attribution of life and consciousness to certain inanimate objects.

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209
Q

Mahler is associated with:
Select one:
Autistic phase
Conventional morality
Anal phase
Operational stage
Individuality vs. inferiority

A

Autistic phase

Margaret Mahler proposed a separation-individuation theory in which a normal autistic phase was described.

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210
Q

A psychology student is keen to know about the ICD-10 duration criteria for the diagnosis of mania. The episode should last at least

A

1 week

Both ICD-10 and DSM-4 specify the manic episode should last at least 1 week and the disturbance is sufficiently severe to impair social and occupational functioning.

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211
Q

The symptoms of adjustment disorder resolve within

A

6 months

Adjustment disorder requires a stressor and that the symptoms should resolve within 6 months of termination of the stressor or its consequences.

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212
Q

What is the most common psychiatric diagnosis among those presenting to emergency departments following self-harm?

A

Adjustment disorder

The most common psychiatric diagnosis among those presenting to emergency departments following self-harm is adjustment disorder.

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213
Q

Which of the following descriptions is suggestive of dissocial personality disorder?
Select one:
Evidence of childhood conduct disorder
Sensitive to criticisms
Emotionally aloof
Flattened affectivity
Unclear identity

A

Evidence of childhood conduct disorder

A callous lack of concern for others, irresponsibility, irritability, aggression, tendency to act outside social norms, a disregard for the feelings of others, inability to maintain enduring relationships, low threshold for violence, a tendency to blame others, evidence of childhood conduct disorder are the reported features of dissocial personality.

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214
Q

ICD-10 diagnostic criteria for dissocial personality disorder includes:
Select one:
Low frustration tolerance
Diagnosis of conduct disorder
Incapacity to form relationships
Accepting inappropriate blame
Persistent irritability

A

Low frustration tolerance

ICD-10 diagnostic criteria include:
* a callous lack of concern for the feelings of others
* an incapacity to maintain (not establish) enduring relationships
* an incapacity to experience guilt
* a persistent proneness to blame others
* disregard for social norms
* a very low frustration tolerance
Conduct disorder during childhood and adolescence, though not invariably present, may further support the diagnosis. Persistent irritability may be an associated feature.

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215
Q

A HIV carrier with ring-like lesions on MRI scan is most likely to have a diagnosis of

A

Toxoplasmosis

Cerebral toxoplasmosis commonly affects patients with advanced HIV immunodeficiency. Toxoplasmosis with CNS involvement in patients who are immunocompromised can be severe and debilitating, and the condition may be fatal. Magnetic Resonance Imaging (MRI) scan shows multiple ring-enhancing lesions with extensive surrounding oedema in supratentorial as well as the infratentorial region.

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216
Q

Which one of the following tests would be best used for testing executive function?
Select one:
Thematic Apperception Test
Minnesota Multiphasic Personality Inventory
Trail Making Tests
Brief Psychiatric Rating Scale
Halstead-Reitan Battery

A

Trail making tests

The Trail Making Test (TMT) has two parts and the times taken to complete each part are used to measure central executive functioning.
In Part A, the participant must draw a line to connect consecutive numbers, 1 to 25. This tests visual screening, processing speed, attention.
In Part B the participant connects numbers and letters in an alternating progressive sequence (i.e. connect A-1-B-2-C-3 and so on). This tests central executive processes of task-set inhibition, cognitive flexibility, and the ability to maintain a response set.
In order to measure central executive functioning, the difference in time taken to complete TMT-B and TMT-A (which has little executive input) is calculated.

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217
Q

A doctor, during a clinical interview, tells a patient, “I think I now have a good idea of your financial situation; perhaps we should talk about your family problems now”. Which technique is the doctor utilising?

A

Transition

Transition is an interview technique used when moving from one to another topic. It is a very useful interview skill and preferably must be done as smoothly as possible to keep the patient interested.

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218
Q

What is the most common finding in a newly diagnosed patient with Parkinson’s disease?

A

Unilateral resting tremor

Unilateral resting tremor is the most common presenting feature in Parkinson’s disease.

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219
Q

A patient is suspected to have temporal lobe damage resulting from a vascular lesion. Which visual sign may be elicited on perimetry?

A

Upper quadrantanopia

Temporal lesions produce upper quadrantanopia due to damage to optic radiation.

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220
Q

A patient breaks down and cries during interview. Which technique is useful at this stage?

A

Validation

Validation statements facilitate the continuation of a clinical interview by ‘normalising’ experiences e.g. ‘it is normal to cry at difficult times.’

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221
Q

A man has a diagnosis of chronic schizophrenia. He has polyuria, polydipsia and becomes acutely confused. On further investigation, his serum sodium levels are notably low. What do you suspect?

A

Water intoxication

Water intoxication occurs particularly in patients with chronic schizophrenia. The clinical presentation includes polyuria, polydipsia, hyponatraemia, confusion, seizures, cerebral and peripheral edema. Death can occur in extreme cases. The cause is generally unknown.

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222
Q

Which of the following is NOT a feature of late-onset schizophrenia?
Select one:
Family history of schizophrenia is infrequent when compared to early onset
Less pronounced formal thought disturbances
White matter hyperintensities on MRI brain
Fewer negative symptoms
Prominent hallucinations

A

White matter hyperintensities on MRI brain

Late-onset schizophrenia is characterised by:
* a predominance of females
* fewer negative symptoms
* infrequent formal thought disorder
* prominent hallucinations (notably visual)
Associations include:
* social isolation
* sensory impairment
* premorbid paranoid personality traits.
Family loading for schizophrenia is lower than for early-onset cases (Howard et al., 2000).
White matter hyperintensities are not associated with late-onset schizophrenia (Howard 1995; Rivkin 2000) though one contradictory study exists favouring higher frequency of WMH in late-onset schizophrenia

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223
Q

A 44-year-old man with schizophrenia has intense suspiciousness and persecutory delusions. He tells you that his neighbours want him to prepare a home-made explosive with detonators. Which of the following would be the best response at this point of interview?
Select one:
Perhaps we should ask your neighbours if this is true
Why do you think your neighbours want you to do that?
No, I don’t think this sort of thing could happen
If you prepare explosives, we may have to involve the police
It doesn’t sound like a good idea to prepare explosives

A

Why do you think your neighbours want you to do that?

The main purpose of the interview is to collect clinically useful information that will enable diagnostic process and facilitate management. It is important to maintain a good therapeutic relationship with the patient while pursuing the above goals. Enquiring ‘Why do you think your neighbours want you to do that?’ serves both these purposes.

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224
Q

Regarding ‘Quality Of Life-16’, which of the following is true:
Select one:
It is a self-administered scale
It is a structured interview
It is a semi-structured interview
The maximal score is 16
It cannot be used in patients with chronic illnesses

A

It is a self-administered scale

Flanagan’s QOLS originally had 15 items, but was expanded to include a 16th item (independence). It measures five conceptual domains of quality of life:
1. material and physical well-being
2. relationships with other people
3. social, community and civic activities
4. personal development and fulfilment
5. recreation
It is most often used in samples with chronic illnesses. The QOLS is usually self-administered. It can also be completed by interview format. The QOLS can be completed in about 5 minutes. Scores can range from 16 to 112.

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225
Q

A patient with schizophrenia often rocks back and forth. He is also observed to be thumping his head with his fist for no apparent reason. He is exhibiting which symptom?

A

Stereotypy

This patient is demonstrating stereotypy; a symptom characterised by repetitive, functionless motor behaviour.
Stereotypies, mannerisms, and verbigeration are often elicited in patients with catatonic schizophrenia.
Hemiballism - hyperkinetic movement disorder characterised by violent involuntary proximal limb movements on one side of the body, caused by damage to the subthalamic nucleus of the basal ganglia. Unrelated to schizophrenia.
Ambitendency - a motor symptom where a patient who has been given an instruction alternates between automatic obedience and negativism e.g. when asked to shake hands, the patient appears indecisive, repeatedly extending and withdrawing their hand.
Ambivalence - described by Bleuler as one of the four primary symptoms of schizophrenia and was defined as having positive and negative emotions at the same time. Patients exhibiting ambivalence often have an inability to decide on an action.
Mannerisms - repetitive, goal-directed movements (e.g. saluting).

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226
Q

A patient that you see in your hospital corridor is moving his closed fist round to the right and round to the left in a repetitive manner. He is exhibiting:

A

Stereotypy

Repetitive, non-goal-directed motor activity (e.g. finger-play, repeatedly touching, patting or rubbing self) is called stereotypy. It is an abnormality not inherent in act but in its frequency.

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227
Q

A man using mescaline ‘smelt the noise of the trumpet’. This condition is known as:

A

Synaesthesia

This is a classical example of synaesthesia described by Sims. The phenomenon of perceiving a stimulus of one modality in a different modality (may be single or multiple modalities) is called synaesthesia. E.g. tasting the music, hearing colours and smelling voices. It is not a hallucination as the perceived object has an appropriate stimulus. Reflex hallucinations are a hallucinatory form of synaesthesia. A stimulus in one modality produces a hallucination in another modality.

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228
Q

A psychologist asked a man whether he had any special powers or abilities that other people do not have. He replied that he wasn’t sure as he never visited Russia. When asked to clarify, he asked, “If you throw twenty-and-two blackbirds, would you know where does the evening start?” This form of speech is called:

A

Tangentiality

Tangentiality - speech is organised, but not goal directed. The subject answers a question in an indirect manner with vague relevance. The answer appears distant and drifted away from the original goal.

229
Q

In psychopathology, the term ‘moria’ refers to:

A

Tendency to be inappropriately euphoric

Puerile, childish, frivolous, or silly behaviour occurs with right frontotemporal lesions and in frontotemporal dementia. In such cases, moria (foolish or silly euphoria) and Witzelsucht (a tendency to tell inappropriate jokes are seen).

230
Q

The average capacity of short term memory is:

A

7+/-2

Short term memory:
It holds a small amount of information. The capacity of STM according to Miller is 7+/- 2, as evident while testing digit span.
By chunking, larger information could be sorted into 7+/- 2 items and effectively stored. Chunks are bits of information coordinated together with the help of long-term memory.
Unaided, STM lasts 15 to 30 seconds. By maintenance rehearsal (repetition of items in one’s mind) this duration can be increased further up to indefinite periods.
STM largely uses acoustic coding (mostly) or visual coding. Recall of information is effortless and usually error-free.
Information is held in STM by the process of rehearsal.
Loss of information from STM occurs mainly through displacement (newly acquired items entering STM displaces existing material) and decay (recently acquired material has a higher trace strength than older items)

231
Q

Which one among the following is a mode of retrieval from long-term memory?
Select one:
Recall
Relearning
Recognition
Reintegration

A

All of the above

Modes of retrieval (LTM store being passed onto STM) are through:
* recognition (solving MCQs)
* recall (actively searching and reproducing)
* relearning
* confabulation
* reintegration (recollection of past experiences based on certain cues)
An eyewitness testimony is a reconstructive memory, which is a mode of retrieval from long-term memory. However, a reconstructive memory of events as in eyewitness testimony is affected by the type of questioning asked to elicit the information.

232
Q

With regard to attention, which of the following is incorrect?
Select one:
Divided attention is paying attention to multiple tasks at a time
Concentration is sustained attention
Stroop test is a test for selective attention
Alternating attention is the highest level of attention.
Selective attention is the ability to avoid distractions

A

Alternating attention is the highest level of attention.

Divided attention is the highest level of attention, and it refers to the ability to respond simultaneously to multiple tasks or multiple task demands. Alternating attention refers to the ability to switch between tasks; to stop one task to participate in another and then be able to return to the initial task.

233
Q

Incorporating ‘applied tension’ is necessary when doing exposure therapy with what particular group of phobias?

A

Blood-injection-injury type phobia

Blood-injection-injury type phobia is unique in that a paradoxical drop in blood pressure occurs during exposure to a particular stimulus, leading to fainting. Applied tension involves contraction of large muscle groups to maintain a normal blood pressure during exposure. This practice is contrary to the progressive muscle relaxation that is employed when treating other forms of anxiety.

234
Q

A 45-year-old female patient is undergoing regular chemotherapy for her breast cancer; at her last visit she became nauseated and vomited as she entered the clinic room. This is likely to be related to:

A

Classical conditioning

Classical conditioning occurs when a patient associates some aspect of the oncology clinic (e.g. the room, smell, the sight of the intravenous infusion bottle) with the nausea previously experienced during the intravenous process itself. Thus, the mere sight or smell of one or more components of the experience can produce the conditioned response of nausea and vomiting.

235
Q

A 45-year-old man was admitted to the acquired brain injury unit with severe memory impairment. Which of the common clinical tests is used in testing his immediate memory?

A

Digit span

The terms used in psychology and psychiatry are somewhat different which could lead to some confusion.
The terms used in psychology are short term memory (immediate memory in psychiatry) and long-term memory (recent memory and remote memory in psychiatry).
In psychology, short term memory refers to immediate memory, which is tested by the recall of digits immediately after their presentation (digit span).
However, in psychiatry it is often referred to as a test of immediate memory. Recollection of a name and an address after 5 minutes is seen as a test of recent memory (which, in fact, is a part of LTM and should not be considered as a test of STM)

236
Q

According to Aaron Beck, depression results from

A

Distorted negative thoughts

Aaron Beck first proposed the theory behind cognitive distortions that are associated with depression.

237
Q

With regards to exposure-based treatment approaches, which of the following is true?
Select one:
Exposure should be sufficiently long for response to occur
Direct exposure to feared object is detrimental
An overtly safe environment should not be created
Experience of anxiety during the first session must be avoided
Patients must be discouraged from being exposed outside the treatment context

A

Exposure should be sufficiently long for response to occur

Exposure therapy has been shown to be an evidence-based treatment component for phobias, GAD, OCD, panic disorder. There are several variations of exposure therapy (in vivo, graded, flooding, imaginal, interoceptive, systematic desensitisation). Over time, people find that their reactions to feared objects or situations decrease. Exposure can help weaken previously learned associations between feared objects, activities, or situations and bad outcomes.
The correct answer is: Exposure should be sufficiently long for response to occur

238
Q

Two antidepressants A and B were introduced. Both A and B had similar mechanism of action and similar efficacy. A shows 50% failure rate. B shows 50% success rate. Drug B reported much better sales when marketed than drug A. Select the cognitive heuristic in this case.

A

Framing

Framing is a cognitive heuristic in which people tend to reach conclusions based on the ‘framework’ within which a situation was presented. A judgment is made based on whether the options are presented with positive or negative connotations.

239
Q

Which brain region plays a predominant role in working memory?
Select one:
Hippocampus
Amygdala
Occipital lobe
Frontal cortex
Cerebellum

A

Frontal cortex

Dorsolateral prefrontal cortex is considered to be a significant seat of working memory capacity. Impairment of fronto-parietal networks in schizophrenia is thought to be related to working memory deficits seen in this disorder.

240
Q

Which theory of perception is most aligned with the view that “the whole is more than the sum of the parts”?

A

Gestalt

When the perceptual system forms a percept or gestalt, the whole thing has a reality of its own, independent of the parts. The Gestalt psychologist Kurt Koffka made a famous statement about this: “The whole is other than the sum of its parts.” This statement is often translated into English as, “The whole is greater than the sum of the parts.” Koffka did not like that translation. He firmly corrected students who substituted “greater” for “other” (Heider, 1977). “This is not a principle of addition,” he said. The statement as originally worded was supposed to mean that the whole had an independent existence in the perceptual system

241
Q

Motivational interviewing is associated with

A

Increasing cognitive dissonance

Motivational interviewing attempts to encourage people to take on responsibility for their own life and to deal with their problems themselves. The nature, principles and techniques of MI are, without exception, found to relate to one or more of the principles of cognitive dissonance. In creating a cognitive dissonance, however subtly or gently you may do that, you are inevitably directing the client to where, in many ways, you as the therapist want them to be, to get them to be open to change.

242
Q

Sternberg’s triarchic theory is a theory of

A

Intelligence

According to Sternberg’s triarchic theory, intelligence has three components: analytical, creative, and practical.

243
Q

The Stanford-Binet test is a test of

A

Intelligence

It is a test of intelligence. Around 50% of the population are said to have an IQ between 90 and 110.
In the Stanford-Binet test, IQ is calculated as follows:
IQ = Measured Age/Chronological Age multiplied by 100.

244
Q

Which of the following statements about Eysenck’s three-factor theory is true?
Select one:
Extraversion is related to autonomic lability
Introversion is associated with autonomic lability
Introverts have a more reactive reticular activating system
Extraverts have a more reactive reticular activating system
Extraversion is related to cortisol levels

A

Introverts have a more reactive reticular activating system

In introverts, the ascending reticular activating system (ARAS) is over-aroused and excited. In extraverts, the ARAS is under-aroused and inhibited.

245
Q

Autonomy, beneficence, non-maleficence in medical ethics are described as:

A

Principlism

Principlism refers to Childress and Beauchamp’s four prima facie principles in ethics: autonomy, beneficence, non-maleficence, and justice.

246
Q

In infants born prematurely, after which week of pregnancy are we legally able to resuscitate an infant irrespective of parental wishes?

A

25 weeks

In the United Kingdom women have access to termination of pregnancy for maternal reasons until 24 weeks’ completed gestation, but it is accepted practice for children born at or beyond 25 weeks’ gestation to be treated according to the child’s perceived best interests even if this is not in accordance with parental wishes.
There is no legislation imposing an age limit in UK for resuscitating premature babies as of now. If this is a choice, this must be chosen.

247
Q

Social deprivation has no role in the aetiology of which of the following disorders?

A

Alzheimer’s disease

There is no significant causal association between increased risk of Alzheimer’s disease (AD) and socioeconomic status (SES). There is an association between low education and increased AD risk, but this is not mediated by adult SES or socioeconomic mobility.

248
Q

A 29-year-old man with a long history of schizophrenia and currently being effectively treated in the community decides to donate blood. His treating team feels he has the capacity to make decision with respect to this issue. Which principle is the treating team has adhering to?

A

Autonomy

Individual freedom is based on the principle of autonomy in modern medical ethics. It is the principle that a person should be free to make his or her own decisions.

249
Q

An Asian immigrant in England is observed to practice his religion and cultural traditions at home but adapts well especially at work with good degree of fluency in both English and his native language. This type of enculturation is called:

A

Biculturalism

The acculturative process involves acquisition and retention as well as relinquishing attitudes/values and practices in both majority and minority populations that continues over several generations. The rate of change and the circumstances that influence it vary greatly, both between and within groups. For these reasons, studies of groups experiencing acculturative change often divide the groups by temporal experience into first, second, and third-generation immigrants. Families within such groups have been categorised as traditional, transitional, or bicultural.
* Traditional families are characterised as using their native tongues rather than English, living in ethnic enclaves, avoiding interaction with majority cultural institutions, and maintaining preimmigration values and behaviours.
* Transitional families are characterised by greater fluency in the language of the host culture and by children who are becoming familiar with the values and social behaviours of the dominant majority population through attendance at school and school-related activities.
* Bicultural families are defined as those with a high degree of language fluency in their native languages as well as English, economic stability, and residence in multiethnic settings. Biculturalism appears to be more adaptive and associated with minimal acculturation stress.

250
Q

Theories of social origins of depression is related to which pair of individuals?

A

Brown and Harris

In 1978, as the result of two community surveys carried out in Camberwell between 1969 and 1975 of women aged 18 and 65 and a series of comparable psychiatric patients, Brown and Harris published their influential book, ‘Social Origins of Depression’.

251
Q

What is the incidence of seizures in patients taking clozapine at a dose of more than 600mg/day?

A

0.05

Risk of seizures at clozapine dose:
<300 mg/d = 1% to 2%
300 to 600 mg/d = 3% to 4%
>600 mg/d = 5%

252
Q

Neuroleptic malignant syndrome (NMS) is associated with a mortality rate of:

A

15-20%

5-20% of patients on oral medication and up to 30% of patients on depot formulations who develop the syndrome will die from the condition if untreated.

253
Q

Which one among the following is not a common side effect of sodium valproate?
Select one:
Agranulocytosis
Hair loss with curly regrowth
Tremor
Weight gain
Thrombocytopenia

A

Agranulocytosis

Common side effects of sodium valproate include weight gain, nausea, vomiting, diarrhoea, sedation, tremor, thrombocytopenia and hair loss with curly regrowth. Agranulocytosis is listed as a rare/very rare side effect.

254
Q

A 25-year-old gentleman being treated for first episode schizophrenia. He was initially started on risperidone 2mg daily which was subsequently increased to 4mg by week 4. Although he was noted to show good improvement with his delusions and hallucinations, the nurses on the ward noticed he is generally restless, constantly pacing up and down, foot stamping when seated, rocking back and forth and fidgeting in his chair. Which side effect of treatment is he experiencing?

A

Akathisia

Akathisia is a subjective state of motor restlessness, which is seen in 20-25% of patients prescribed with anti-psychotic medication. It is an unpleasant state of inner restlessness where there is a strong desire or compulsion to move. It may become prominent as the dose of antipsychotic medication is increased. Akathisia can be mistaken for psychotic agitation and has been linked with suicide and aggression towards others.

255
Q

A significant prolactin elevating effect is seen with one of the following:
Select one:
Ziprasidone
Clozapine
Quetiapine
Aripiprazole
Amisulpiride

A

Amisulpiride

Amisulpride, sulpiride, risperidone and paliperidone are particularly associated with hyperprolactinaemia.

256
Q

The antidepressant most associated with QTc prolongation is

A

Amitriptyline

The antidepressant class most associated with QTc prolongation is tricyclic antidepressants such as amitriptyline. Moclobemide, citalopram, and venlafaxine have a low effect on QTc prolongation. Mirtazapine and SSRIs (except citalopram) have no effect on QTc prolongation.

257
Q

Which of the following psychotropics has a tendency to reduce gastrointestinal transit with a resultant slow absorption when given orally? Select one:
Amitriptyline
Risperidone
Diazepam
Fluoxetine
Lithium carbonate

A

Amitriptyline

Amitriptyline, due to its atropine-like anticholinergic action, can slow GI transit with a resultant slow absorption. However, nearly 95% of the orally administered drug gets absorbed.

258
Q

28-year-old pregnant woman with severe depression. The ideal antidepressant treatment of choice would be:

A

Amitriptyline, nortriptyline, imipramine or fluoxetine.

259
Q

Which drugs increase the risk of bleeding in patients on SSRIs?

A

Aspirin, clopidogrel and NSAIDs

There is an increased risk of bleeding when SSRIs are taken with antiplatelet drugs such as low-dose aspirin or clopidogrel and non-steroidal anti-inflammatory drugs (NSAIDs). However, the risk is higher with aspirin than other NSAIDs. A large Canadian study found patients taking both aspirin and an SSRI had a 42% increased risk of a bleeding episode - gastrointestinal bleeding, hemorrhagic stroke or other forms of bleeding that required hospital admission - compared with those taking aspirin alone.

260
Q

A 33-year-old man is admitted to Psychiatric Intensive Care Unit with an acute relapse of schizophrenia. He is started on a typical antipsychotic medication after which his symptoms reduce in intensity. But since this new treatment was started, he complains of feeling restless and is seen pacing up and down a lot. When you interview him, he appears to be shuffling often and not able to stay for long in the interview room. If you want to prescribe propranolol to this patient, which medical condition will be a contraindication for the prescription?

A

Asthma

Propranolol and other beta-blockers are recommended to treat akathisia, but beta-receptor blockade causes bronchospasm, and so are contraindicated in asthma.

261
Q

Which of the following is not a feature of neuroleptic malignant syndrome?
Select one:
Incontinence
Bradycardia
Tremor
Rigidity
Diaphoresis

A

Bradycardia

Bradycardia is not a feature of neuroleptic malignant syndrome (NMS).
NMS can occur at anytime during treatment with neuroleptics. It consists of the tetrad of:
1. extreme hyperthermia
2. severe muscular rigidity
3. confusion
4. autonomic fluctuations (tachycardia and elevated/labile blood pressure)
Other clinical features of neuroleptic malignant syndrome include diaphoresis, dysphagia, tremor, shuffling gait, tachycardia, dyspnoea, incontinence, delirium progressing to lethargy, stupor, coma.

262
Q

Which is the most likely change seen in the ECG of patients taking lithium?

A

Flattening or inversion of the T wave.

The most frequently observed change during treatment was flattening or inversion of the T wave.
* Heart rate decreased
* P-Q interval increased slightly during therapy
* There was no change in the ST segment
* There was no change in QTc
Well-monitored lithium treatment of patients with serum lithium concentrations of about 0.6 mmol/L does not cause serious ECG abnormalities. In the absence of symptoms or signs of heart disease, routine monitoring of ECG is not necessary during lithium treatment.

263
Q

Which among the following antipsychotic drugs causes the most prolongation of QT-c interval on the ECG?
Select one:
Clozapine
Olanzapine
Haloperidol
Chlorpromazine
Thioridazine

A

Thioridazide

The effect on QTC prolongation is high for some psychotropic drugs like thioridazine, pimozide, sertindole, and any intravenous antipsychotic. Thioridazine prolongs the QTc interval in a dose-dependent manner. The branded product was withdrawn worldwide in 2005 because it caused severe cardiac arrhythmias.
There is a moderate effect on QT-c prolongation for psychotropic drugs such as chlorpromazine, quetiapine, ziprasidone and tricyclic antidepressants.

264
Q

Which of the following is not true regarding drugs used to prevent relapse in alcohol dependence?
Acamprosate interacts with disulfiram
Disulfiram inhibits metabolism of warfarin
Metronidazole can cause disulfiram-like reactions with alcohol
Alcohol should be avoided for 1 week following cessation of disulfiram
Acamprosate acts on NMDA receptors

A

Acamprosate interacts with disulfiram

Acamprosate does not interact with disulfiram. It is believed to act through enhancing GABA transmission in the brain. It is licensed to prevent relapse to alcohol use and has been found to have a modest treatment effect.
Disulfiram works by inhibiting the enzyme acetaldehyde dehydrogenase. Alcohol consumption results in increased serum acetaldehyde, causing diaphoresis, palpitations, facial flushing, nausea, vertigo, hypotension, and tachycardia. This aggregation of symptoms is known as the disulfiram-alcohol reaction and discourages alcohol intake.

265
Q

Choose one drug that modulates melatonin system directly.
Select one:
Trazodone
Zopiclone
Agomelatine
Perphenazine
Galantamine

A

Agomelatine

Agomelatine is a new antidepressant with a novel mechanism of action. It acts as an agonist to both the melatonin receptors MT1 and MT2. It is also an antagonist to the 5- HT2C serotonin receptor.

266
Q

Which of the following accurately reflects the activity of benzodiazepines?
Select one:
Reduce GABA transmission
Block sodium reuptake
Allosteric modification of GABA receptor
Substitute for GABA
Facilitate action potential

A

Allosteric modification of GABA receptor

  • Benzodiazepines (BDZS) bind to the gamma sub-unit of the GABA-A receptor.
  • Their binding causes an allosteric (structural) modification of the receptor that results in an increase in GABA-A receptor activity. BDZS therefore increase the frequency of channel opening events which leads to an increase in chloride ion conductance and inhibition of the action potential.
    BDZs do not substitute for GABA, which binds at the alpha sub-unit.
267
Q

A 62-year-old patient with insomnia and depression develops priapism when trazodone is prescribed. This is possibly mediated via

A

Alpha-1 antagonism

Alpha-1 blockade causes priapism when using trazodone or risperidone.

268
Q

Impotence as a side effect of antipsychotics is caused due to which mechanism?

A

Alpha-1 adrenergic blockade

Side effects due to alpha-1 adrenergic blockade include sedation, postural hypotension, impotence and ejaculatory failure.
Alpha-1 adrenergic blockade leads to a moderately high reported incidence of ejaculatory problems such as retrograde ejaculation and rarely priapism. Sexual dysfunction
has been reported as a side effect of all antipsychotics and up to 45% of people taking conventional antipsychotics experience sexual dysfunction.

269
Q

The mechanism of action of varenicline is:

A

Alpha-4 beta-2 (a4ẞ2) nicotinic acetylcholine receptor partial agonist

Varenicline is a partial agonist at the alpha-4 beta-2 (a4ẞ2) unit of nicotinic acetylcholine receptor. It assists smoking cessation by relieving nicotine withdrawal symptoms and reducing the rewarding properties of nicotine.

270
Q

Which medication has dual action in prophylaxis of influenza as well as in treatment of Parkinson’s disease?

A

Amantadine

Amantadine is an antiviral agent and prevents viral uncoating. It also induces dopamine release from nerve terminals and so is used in Parkinsonism.

271
Q

Which of the following statement is correct with regard to pharmacokinetics? Select one:
Chlorpromazine decreases levels of tricyclics
Most orally administered antipsychotics undergo first pass metabolism Depots achieve peak plasma levels on the third day after injection
First pass metabolism enables easier entry through blood brain barrier
Extensive first pass metabolism increases bioavailability

A

Most orally administered antipsychotics undergo first pass metabolism

  • The correct answer is: Most orally administered antipsychotics undergo first pass metabolism.
  • First pass metabolism will serve to reduce bioavailability.
  • It does not influence passage via BBB.
  • Chlorpromazine inhibits TCA metabolism thereby increasing TCA levels.
272
Q

What is the half-life of risperidone?

A

24 hours

The half-life of risperidone and of its active metabolite is about 24 hours. The apparent half-life of risperidone is 3 hours in extensive metabolisers and 20 hours in poor metabolisers.

273
Q

43-year-old gentleman who has a 15 year history of schizophrenia and poor adherence with antipsychotic treatments. He has been stabilised on 15mg of olanzapine in the hospital and he has previously done well on flupentixol injections. He has agreed to switch to flupentixol injection once a fortnight. The test dose was administered. What is the most likely amount of time he will need to continue taking the oral olanzapine?

A

3-6 months

The depot medication may require 3-6 months to reach a steady plasma level, therefore oral antipsychotic medication should be continued until steady state plasma level is achieved. Attainment of peak plasma levels, therapeutic effect and steady state plasma levels are all delayed with depot injection. The use of adjunctive oral medication to assess depot requirements may be helpful and oral anti psychotic cover is sometimes required for longer periods of time. Moreover, in most clinical trials relapse seems only to occur six months after withdrawing depot therapy; roughly the time required to clear steady state depot drug levels from the blood.

274
Q

The dosage of duloxetine used for the treatment of diabetic neuropathy is

A

60-120mg

Duloxetine inhibits the re-uptake of both serotonin and noradrenaline. It is used for the treatment of major depressive disorder (60mg once daily), generalised anxiety disorder (30-120mg) and the treatment of diabetic neuropathy (60-120mg in divided doses).

275
Q

58-year-old high school chemistry teacher who has recently been diagnosed with Alzheimer’s Dementia. She is keen to undergo genetic testing to know whether her children are at increased risk of the disease. Presenilin-1 is a gene implicated in early onset Alzheimer’s Dementia. Mutations in the presenilin-1 gene are located on which chromosome?

A

Chromosome 14

Some cases of early onset Alzheimer’s dementia (EOAD) are clearly inherited in an autosomal-dominant manner. The beta APP gene on chromosome 21, the PS-1 (presenilin-1) gene on chromosome 14, and the PS-2 (presenilin 2) gene on chromosome 1 have all been characterised as genes in which mutations lead to familial EOAD.

276
Q

Mitotic cell division results in the production of which type of cells?

A

Diploid cells

Mitosis is cell division to produce two identical daughter cells with a full complement of chromosomes (46 in humans). Meiosis results in gametes or haploid cells.

277
Q

Mutations in the progranulin gene are thought to be causative in which disorder?

A

Frontotemporal dementia

Approximately 10% of cases of FTD are inherited in an autosomal-dominant manner. Mutations in the gene of microtubule-associated protein tau (MAPT) was the first identified monogenic cause of FTD. Since then, seven mutations in over ten other genes have been identified, with the progranulin gene (GRN), C9orf72 (Chromosome 9 open reading frame 72), TARDBP (TAR DNA-binding protein), FUS (fused in sarcoma), and UBQLN2 (ubiquilin 2). The progranulin gene is located in the 17q21.32 region and is composed of 13 exons. Progranulin is a neurotrophic growth factor. Progranulin mutation is the most common identified genetic variation associated with FTD.

278
Q

6-year-old boy who has learning disability and a prominent jaw. He frequently demonstrates self-hugging and skin-picking behaviours. Which of chromosomal abnormality is most likely to be the cause?

A

17p11.2 microdeletion

This is likely to be Smith-Magenis syndrome which is a genetic disorder with features including intellectual disability, facial abnormalities, difficulty sleeping, and numerous behavioural problems such as self-hugging and skin-picking. Smith-Magenis syndrome affects an estimated between 1 in 15,000 to 1 in 25,000 individuals. It is a microdeletion syndrome characterised by an abnormality in the short (p) arm of chromosome 17 and is sometimes called the 17p syndrome.

279
Q

78-year-old man who has been brought to the GP by his family with progressive memory loss, repeated falls and pill rolling tremor. Which of the following is this condition most associated with?

A

Alpha-synuclein

This is most likely to represent Parkinson’s disease. This is characterised by cell death in the brain’s basal ganglia and the presence of Lewy bodies (alpha-synuclein protein) in many of the remaining neurones. People with parkinson’s disease can develop progressive memory loss and eventually develop dementia. The stooped posture can cause balance problems leading to repeated falls in parkinson’s disease.

280
Q

Genes encoding for which of the following proteins are implicated in ADHD?
Select one:
DRD4
DRD2
MAO-A
MAOB
COMT

A

DRD4

The genome-wide linkage studies conducted to date show divergent findings. Nevertheless, candidate gene studies have produced consistent evidence implicating the genes coding for DRD4, DRD5, SLC6A3, SNAP-25, and HTR1B in the aetiology of ADHD. Ref: Faraone SV, Mick E. Molecular genetics of attention deficit hyperactivity disorder.

281
Q

Which of the following can be considered an example of epigenetic mechanisms operating to influence the risk of mental illnesses?
Select one:
Early maternal support enhances hippocampal development
Depression is more prevalent in the aftermath of negative life events
Risk of psychosis varies with genetic variations in the complement system x
Family history of bipolar disorder increases the risk of both schizophrenia and depression
Psychosis often emerges from an attenuated symptom state

A

Early maternal support enhances hippocampal development

DNA methylation (an epigenetic mechanism) in children raised in institutions is different compared with those raised by their biological parents. In addition, maternal support observed in early childhood is noted to be strongly predictive of hippocampal volume measured at school age.

282
Q

45-year-old man who has experienced a major head injury leaving him with a degree of disability. He notes that he can no longer keep his balance on a bike or handle a pen with the dexterity that he used to. Damage to which area of his brain is most likely to account for his symptoms?

A

Dominant parietal and/or frontal lobe

Apraxia or dyspraxia is most likely to be due to a lesion affecting the dominant parietal and/or frontal lobe. It is possible for it to result from damage to the non-dominant side, but this is less common.

283
Q

The reward centre of the human brain is located in

A

Nucleus accumbens

There are numerous areas associated with the reward system but specific reward centres are thought to be located in the nucleus accumbens shell, ventral pallidum, parabrachial nucleus, orbitofrontal cortex and insular cortex.

284
Q

74-year-old woman with presents to her GP with sudden onset loss of vision on her left side. On examination, she can see objects and movements on her right side without difficulty with both eyes, but is unable to detect any left-sided stimuli. A lesion in which of the following areas is most likely to be the cause of this symptom?

A

Optic tract

Homonymous hemianopia is a term that describes the visual field loss on the same side of both eyes. It can result from lesions of the contralateral occipital lobe or optic
tract.
* Chiasmal lesions lead to bipolar hemianopia.
* Optic nerve lesions result in monocular blindness.
* Temporal and parietal lobe lesions lead to superior and inferior quadrantanopia respectively.

285
Q

Stimulus generalisation

Which type of learning process is involved in this situation?
The fear that a child with a spider phobia shows towards insects in general.

A

Stimulus generalisation

Pavlovs’ dog experiments were conducted using human subjects by Watson & Rayner and paved the way for founding the school of behaviourism. Watson produced ‘phobia’ in an infant called Little Albert. By exposing him to loud, frightening noise whenever he was shown a white rat, eventually Albert became fearful of the white rat, even when he heard no loud noise. A similar fear response was seen when any furry white object was shown to Albert. This ‘spread’ of associative learning from one stimulus to other is called stimulus generalisation.

286
Q

Stimulus generalisation

Which type of learning process is involved in this situation?
Humans usually react with a fear response to snakes.

A

Stimulus preparedness

Stimulus preparedness (Seligman) explains why snake and spider phobia are commoner than shoe phobia or watch phobia. In evolutionary terms, the stimuli that were threatening to hunter-gatherer man has been hard-wired in our system to respond immediately - and phobia develops more readily for such ‘prepared stimuli’.

287
Q

Principles of Learning Theory

Which type of learning process is involved in this situation?
Cars have the habit of flashing a seat belt warning sign until you fasten your seat belt.

A

Negative reinforcement

Reinforcement can be positive or negative according to the way reinforcers are handled i.e. if something is given or taken away. If a particular behaviour increases by providing a reinforcer, then this is positive reinforcement. If a particular behaviour increases by removal of an aversive stimulus then this is negative reinforcement. Similarly punishment can also be positive (smack) or negative (take the chocolate away) though it is often used in positive sense.

288
Q

Adverse effects

While using Lithium what is the most important side effect associated with its therapeutic use

A

Hypothyroidism

Can cause a variety of thyroid problems - the most common being a benign hypothyroid state. 5% patients may develop goiter, and overt hyperthyroidism is also reported in some cases. Thyroid deficiency is common in those with high risk for preexisting antithyroid antibodies such as middle-aged women. The risk is 3-4:1 in women and is high in first two years of treatment. Rapid-cycling patients are at higher risk. High TSH is seen in nearly 1/3rd of chronic lithium-treated patients - without clinical hypothyroidism. In resistant depression or non-responsive cyclers with bipolar it may be useful treating this subclinical state with thyroxine.

289
Q

Adverse effects

While using Aripiprazole what is the most important side effect associated with its therapeutic use

A

Nausea/vomiting

a D2 receptor partial agonist and therefore, more likely to induce side effects like nausea and vomiting.

290
Q

Adverse effects

While using Topiramate what is the most important side effect associated with its therapeutic use

A

Word finding difficulties

Several studies have documented language impairment due to the use of topiramate. Word-finding difficulties are noted in 7.2% of epileptic patients taking topiramate, especially those with a positive family history of epilepsy, or simple partial seizures and left temporal seizures.

291
Q

Neuropathology

For this clinical conditions, identify the most common neuropathological changes in the brain.
A 70-year-old gentleman with history of parkinsonism, confusion and visual hallucinations (Choose TWO)

A

Intraneuronal synuclein deposits in cortex and substantia nigra +
Sensitivity to antipsychotics

This is a case of Lewy body dementia characterised by neuroleptic sensitivity and the presence of Lewy bodies on pathological examination. Lewy bodies are intraneuronal deposits.

292
Q

Neuropathology

For this clinical conditions, identify the most common neuropathological changes in the brain.
An 85-year-old lady with progressive memory loss for recent events and dysphasia, which has become more generalized. She also has a 20-years history of alcohol misuse (Choose TWO)

A

Presence of e-4 allele + Neurofibrillary tangles and amyloid plaques in neocortex,

This is an example of Alzheimer’s disease characterised by amyloid plaques, neurofibrillary tangles and apo-E4 gene.

293
Q

Neuropathology

For this clinical conditions, identify the most common neuropathological changes in the brain.
A 57-year-old gentleman presenting with altered behaviour, apathy, disinhibition and word finding difficulties. Mother and aunt died from a similar condition. (Choose TWO)

A

Atrophy of frontal poles + Mutation in Tau gene

This case describes frontotemporal dementia characterised by frontal and temporal lobe atrophy and mutations in the tau gene.

294
Q

Selectivity of Tricyclics (TCAs)

This drug is the most serotonergic reuptake-selective of all tricyclic antidepressants.

A

Clomipramine

295
Q

Selectivity of Tricyclics (TCAs)

This drug is the most noradrenergic-selective of all tricyclic antidepressants.

A

Desipramine

296
Q

Selectivity of Tricyclics (TCAs)

This drug has the most antihistaminic activity.

A

Doxepin

297
Q

ECG changes

Psychotropic use is often associated with ECG changes, necessitating a good working knowledge of ECG findings for a psychiatric trainee. Identify the possible ECG changes.
A 25-year-old patient with chronic schizophrenia was started on clozapine two weeks ago. He developed flu-like symptoms and chest pain. Pulse rate is 120 per minute, but it is regular. (TWO)

A

P-R interval of 280 ms and P waves present before every QRS, Diffuse ST elevation with saddle formation

This is a case of clozapine-induced myocarditis. It generally occurs within 6-8 weeks of starting clozapine treatment. Saddle elevation of ST waves is due to pericardial involvement. Diffuse T wave inversion can also be seen. The normal PR interval of 120 to 200ms (3 - 5 small squares) is altered resulting in an abnormal prolongation of PR along with tachycardia. In some cases, complete heart block may ensue.

298
Q

ECG changes

Psychotropic use is often associated with ECG changes, necessitating a good working knowledge of ECG findings for a psychiatric trainee. Identify the possible ECG changes.
A 79-year-old woman with a history of falls and blackouts has an MMSE score of 14/30. She was recently started on medications for memory problems. He pulse is reduced now at a rate of 45/minute. (ONE)

A

P-R interval of 280 ms, P waves present before every QRS

This is a patient who is started on acetylcholinesterase inhibitors for dementia. This group of drugs often causes prolongation of PR interval on ECG along with sinus bradycardia.
The correct answer is:

299
Q

Localizing signs

Choose two symptoms for each of the following conditions:
A malnourished alcoholic. (TWO)

A

Gait Ataxia +
Anosognosia

This patient is most likely to have Wernicke’s encephalopathy. The classic triad includes ophthalmoplegia, ataxia and confusion. The most common ophthalmoplegia here is a bilateral 6th nerve (not 4th nerve) lesion. The 4th nerve may be affected in few cases.

300
Q

Localizing signs

Choose two symptoms for each of the following conditions:
A right-handed person with right parietal lobe lesion. (TWO)

A

Anosognosia + Constructional Apraxia

The non-dominant parietal lobe has a significant role in constructional praxis and also in awareness of illness states.

301
Q

Localizing signs

Choose two symptoms for each of the following conditions:
A frontal meningioma.

A

Ipsilateral optic atrophy + Anosmia

Frontal meningiomas are associated with anosmia (often present due to the common olfactory groove distribution of tumours causing pressure) and ipsilateral optic atrophy, on the side of the tumour. Anosmia with ipsilateral optic atrophy and contralateral papilloedema is also known as Kennedy-Foster syndrome

302
Q

What effect do Aripiprazole and Mirtazapine have on the QT interval at a therapeutic dose?

A

No effect

303
Q

What effect do Venlafaxine and Risperidone have on the QT interval at a therapeutic dose?

A

Low effect

304
Q

What effect do Citalopram and Quetiapine have on the QT interval at a therapeutic dose?

A

Moderate effect

305
Q

What effect do Haloperidol, Sertindole and any intravenous antipsychotic have on the QT interval at a therapeutic dose?

A

High effect

306
Q

Features of defence mechanisms

Choose the most appropriate defence mechanism for the description
Moving consciously available material to the unconscious in a way that the material cannot be recalled at will when required

A

Repression

In repression, recalling at will is absent. Repression can form the basis of dissociative / conversion disorders.

307
Q

Choose the most appropriate defence mechanism for the description
Moving consciously available material to the unconscious in a way that the material can be recalled at will when required

A

Suppression

By contrast, suppression is a mature defense that involves conscious postponement of an issue - recalling at will is possible in suppression.

308
Q

Choose the most appropriate defence mechanism for the description
Expressing feelings without causing unpleasantness or distress to others

A

Humour

Focusing on funny aspects of a painful situation is called humour. It is a mature defence strategy.

309
Q

What is Axis 1 of the DSM-IV for?

A

Clinical Disorders (e.g. anorexia, alcohol intoxication, psychosis due to medical condition)

310
Q

What is Axis 2 of the DSM-IV for?

A

Personality Disorders/Mental Retardation (e.g. moderate mental retardation, anxious personality traits)

311
Q

What is Axis 3 of the DSM-IV for?

A

General Medical Conditions (e.g. epilepsy, hypertension)

312
Q

What is Axis 4 of the DSM-IV for?

A

Psychosocial and Environmental Problems (e.g. unemployment)

313
Q

What is Axis 5 of the DSM-IV for?

A

Global Assessment of Functioning (e.g. GAF score of 60)

314
Q

Clinical neurological signs

Identify the neurological sign seen in the situation:
A 60-year-old man develops alcohol related hepatic failure, which results in anoxic brain damage.

A

Flapping tremor

A flapping tremor is seen in cases of respiratory, hepatic or cardiac failure with encephalopathy.

315
Q

Clinical neurological signs

Identify the neurological sign seen in the situation:
35-year-old man is a known binge drinker with significant malnourishment. He present with acute onset confusion and disorientation.

A

Ataxia

Ataxia and ophthalmoplegia with nystagmus on a background of impaired consciousness are characteristic of Wernicke’s encephalopathy.

316
Q

Clinical neurological signs

Identify the neurological sign seen in the situation:
An 38-year-old woman developed opthalmoplegia. A T1-weighted MRI reveals multiple hypointense lesions in the corpus callosum.

A

Lhermitte’s sign

Lhermitte’s sign is characterised by a sudden unpleasant (but not painful) electric shock-like sensation starting in the neck and radiating along the spine towards distal limbs. It is seen in patients with multiple sclerosis.

317
Q

Alcohol-induced physical symptoms

Choose the symptoms which would best support the diagnosis of Bacterial septicaemia in an alcoholic, malnourished middle-aged man who becomes confused two days after emergency surgery for a femoral shaft fracture.

A

Neck stiffness

318
Q

Alcohol-induced physical symptoms

Choose the symptoms which would best support the diagnosis of Wernicke’s syndrome in an alcoholic, malnourished middle-aged man who becomes confused two days after emergency surgery for a femoral shaft fracture.

A

Ophthalmoplegia

319
Q

Alcohol-induced physical symptoms

Choose the symptoms which would best support the diagnosis of Acute hepatic failure in an alcoholic, malnourished middle-aged man who becomes confused two days after emergency surgery for a femoral shaft fracture.

A

Jaundice

320
Q

Dementia

A salient feature of Lewy Body dementia

A

Dementia with prominent but short lucid intervals

Dementia with Lewy Bodies is characterised by spontaneous motor features of Parkinsonism, along with a fluctuating cognition, recurrent visual hallucinations of well- formed and detailed imageries. The cognitive decline is severe enough to affect normal social and occupational functioning.

321
Q

Dementia

A salient feature of CJD

A

Rapidly progressing dementia

Creutzfeldt-Jakob disease: The clinical picture is one of rapidly deteriorating dementia, myoclonus, cerebellar and extrapyramidal signs leading to death within a year. Patients may present with non-specific symptoms such as lethargy, depression and fatigue. Within weeks, more fulminant symptoms develop, including progressive cortical- pattern dementia, myoclonus and pyramidal and extrapyramidal signs. Myoclonus becomes prominent as the disease progresses. Patients may develop cortical blindness.

322
Q

Dementia

A salient feature of dementia with Parkinson’s disease

A

Emotional blunting

In Parkinson’s disease dementia, affective blunting is prominent often due to well-established Parkinson’s disease.

323
Q

Developmental Psychology

Various psychology and social theories have relevance to psychiatric practice. Which of concept relates most closely to the description?
8-year-old boy who has started to demonstrate an awareness of the conservation of objects and inductive reasoning.

A

Piaget theory of cognitive development

This describes a child in Piaget’s concrete operational stage of cognitive development.

324
Q

Developmental Psychology

Various psychology and social theories have relevance to psychiatric practice. Which of concept relates most closely to the description?
4-year-old girl whose mother has been trying to get her to stop snatching toys from others. She has now started to respond to being denied treats if she snatches things from others

A

Kohlberg’s moral development

An example of moral development, with the child described being in the punishment avoidance stage, as described by Kohlberg.

325
Q

Developmental Psychology

Various psychology and social theories have relevance to psychiatric practice. Which of concept relates most closely to the description?
32-year-old woman who is experiencing periods of despair and protest

A

Grief

Describes stages of grief. There are various theories around the stages of grief. Bowlby’s 4 stages of grief include protest and despair.

326
Q

Which of the following is a correct statement concerning adjustment disorders?
Select one:
A stressful life event is not a core feature
It does not include abnormal grief reactions
It lasts for about 2 years
The onset is usually within one month of a stressful life event
Agitation and dissociation is an important feature

A

The onset is usually within one month of a stressful life event

Adjustment disorders are conceived of as developing in response to a variety of causal stressful events within a month, the symptoms representing an adaptation to these stressors or their continuing effects. The ICD-10 states that the diagnosis depends on a careful evaluation of the relationship between form, content and severity of symptoms; previous history and personality; and stressful event, situation or life crisis. The latter should be established clearly before the diagnosis can be made, and there should be strong presumptive evidence that the disorder would not have arisen without it.

327
Q

32-year-old trans woman wants to have gender affirming bottom surgery. The most likely clinical diagnosis from ICD is

A

Transexualism

328
Q

In ICD-11, which of the following groupings includes a dimensional element for the diagnoses within it?
Select one:
Dissociative disorders
Disorders due to substance use and addictive disorders
Schizophrenia and other primary psychotic disorders
Anxiety and fear related disorders
Catatonia

A

Schizophrenia and other primary psychotic disorders

‘Personality disorders’, ‘schizophrenia and other primary psychotic disorders’, and depressive episodes in ‘mood disorders’ each include significant dimensional elements to enable clearer descriptions of the symptomatology experienced by patients. In schizophrenia and other primary psychotic disorders, this includes: positive symptoms; negative symptoms; depressive mood symptoms; manic mood symptoms; psychomotor symptoms; and cognitive symptoms. Neurodevelopmental disorders also include qualifiers for a diagnosis of autism spectrum disorder to enable a description of the extent of impairment of intellectual functioning and language abilities.

329
Q

Which of the following statements about REM sleep behavioural disorder is incorrect?
Select one:
It can precede the diagnosis of a movement disorder by several years
The episodes arise during the middle to latter third of the night during REM sleep
Treatment with carbamazepine has been shown to be effective
It is associated with disorders such as Parkinson’s disease
There is no loss of muscle tone and the dreams are acted out as complex behaviours

A

Treatment with carbamazepine has been shown to be effective

Normally REM sleep is associated with a loss of muscle tone and dreaming. In RBD, there is no loss of muscle tone, and the dreams are acted as complex behaviours. Patients act out their dreams, with limited awareness of surroundings. The episodes arise during the middle to the latter third of the night during REM sleep. It may occur idiopathically. It is associated with disorders such as Parkinson’s disease, diffuse Lewy body disease, multiple system atrophy and Gullian-Barre syndrome. RBD may be the prodrome of neurodegenerative diseases, such as DLB or Parkinson disease. It can precede the diagnosis of a movement disorder by several years. It is likely that the associated lesions are situated in the brainstem. Treatment with clonazepam has been shown to be effective.

330
Q

Select one atypical feature of schizophrenia
Select one:
Bizarre delusions
Mood-congruent delusions
Systematised delusions
Mood-incongruent delusions
Visual but not auditory hallucinations

A

Visual but not auditory hallucinations

This is a tricky question. Almost all the listed symptoms have been recognized in schizophrenia. But presenting with visual hallucinations in the absence of auditory hallucinations is rare and must lead to further diagnostic evaluation to rule out organic causes.

331
Q

An 8-year-old child presents with multiple tics. Which of the following is a diagnostic feature of Tourette’s syndrome?
Select one:
Coprophagia
Glossolalia
Vocal tics
Inattention
All of the above

A

Vocal tics

Inattention may accompany Tourette’s but it is not a diagnostic feature.

332
Q

The original term that described disorganized schizophrenia as a specific diagnostic entity was coined by:

A

Hecker

Hecker coined the term hebephrenia, which predates the DSM concept of disorganized type.

333
Q

You refer to something the patient said earlier in the interview to move to a new topic. This is called:

A

Referred transition

334
Q

A 45-year-old woman has a long-standing history of bipolar disorder and has been on maintenance treatment with lithium carbonate for 8 years. On testing her thyroid functions, her TSH is 6.4 and T4 is normal. What is the next step of management?

A

Repeat TSH in a month’s time

This lady has a subclinical thyroid disease. This is estimated to be present in 4 to 8.5% of the general population, and up to 20% of women older than 60 years, and about 2% general population are thought to be subclinically hyperthyroid. As she is on lithium, the TSH levels must be monitored in addition to symptoms.

335
Q

An interviewer says, ‘I am impressed by what you have achieved despite all these difficulties’. This is best described as

A

Respectful statement

Such statements convey the mutual respect maintained by the therapist in the wake of an emotionally important disclosure. This can facilitate further conversations.

336
Q

Visual memory and constructional ability can be tested using:
Select one:
Sally and Ann test
Raven’s Progressive Matrices
Rey Auditory Verbal Learning Test
Rey-Osterrieth Complex Figure Test
Clock drawing test

A

Rey-Osterrieth Complex Figure Test

Rey-Osterrieth Complex Figure Test (CFT) is a standard measure of perceptual organisation and visual memory in brain-injured individuals.

337
Q

SPECT stands for?

A

Single-photon emission computed tomography

Single-photon emission computed tomography (SPECT) is a nuclear tomographic imaging technique that uses gamma rays.

338
Q

Which of the following features is not commonly associated with Parkinson’s disease?
Select one:
Rigidity
Visual hallucinations
Bradykinesia
Spinal flexion
Postural instability

A

Spinal flexion

Hallucinations are seen in nearly 40% of patients with Parkinson’s Disease (PD), and fall into three categories:
1. Minor forms, consisting of a sensation of a presence (person), a sideways passage (commonly of an animal) or illusions in 25.5%.
2. Formed visual hallucinations in 22.2%.
3. Auditory hallucinations in 9.7%.
The estimated prevalence of orthostatic hypotension in PD is 30%.
Camptocormia is the extreme forward flexion of the spine associated with dystonia, Tourette syndrome, amyotrophic lateral sclerosis, and PD. While initially thought to be a rare manifestation of PD, recent estimates of the prevalence of camptocormia in patients with PD vary from 3-12%, making it a relatively uncommon feature of PD.

339
Q

A 35-year-old man presents with high blood pressure, rapid pulse and a moist warm skin. His speech is pressured and on examination he has a fine tremor and hyperreflexia. Which of the following drugs has he taken?
Select one:
Alcohol
Stimulant
Opiate
Hallucinogen
Inhalant

A

Stimulant

Stimulants are substances that induce a number of characteristic symptoms. CNS effects include alertness with increased vigilance, a sense of well-being and euphoria. Many users experience insomnia and anorexia, and some may develop psychotic symptoms. Stimulants have peripheral cardiovascular activity, including increased blood pressure and heart rate.

340
Q

A 55-year-old businessman presents with headache, poor concentration, memory loss of a fluctuating nature, with unequal pupils and mild papilloedema on examination. The most likely diagnosis is:

A

Sub-dural haematoma

Subarachnoid haemorrhage generally present more acutely with signs of increased intracranial tension and focal neurological deficits. Chronic SDH (male:female 2:1) is commonly seen in elderly, alcoholics, usually after a mild head injury. The average time between the occurrence of head trauma and the diagnosis of chronic SDH is 4-5 weeks. The presentation is often insidious, with decreased level of consciousness, headache, difficulty with gait or balance, memory loss, mild motor deficits (e.g. hemiparesis) and headache (especially in younger patients).

341
Q

Which one of the following is an appropriate test for orientation?
Select one:
Recalling a name and an address
Knowing today’s date
Subtracting serial 7s from 100
Knowing the role of the interviewer
Drawing a clock face

A

Knowing today’s date

Orientation is usually assessed to time, place and person; it is not particularly sensitive, and intact orientation does not exclude a significant memory disorder, particularly if there is concern about memory from an informant. Time orientation is the most helpful and should include the time of day. Many normal people do not know the exact date, and being out by two days or less is considered normal when scoring this formally.

342
Q

In a malnourished patient with longstanding alcohol use, which of the following complications could worsen on immediate refeeding with a glucose-rich infusion?
Select one:
Sodium depletion
Thiamine deficiency
Alcoholic hepatitis
Pancreatitis
Hypoglycaemia

A

Thiamine deficiency

Thiamine should always be administered prior to glucose infusion because glucose metabolism may rapidly deplete patients’ thiamine reserves in cases of long-standing poor nutrition.

343
Q

During psychiatric assessment the best time to carry out an examination of a patient’s mental state is
Select one:
Throughout the interview
Immediately before discussing diagnosis
During follow up contact with the patient
Immediately after presenting complaints
Immediately after physical examination

A

Throughout the interview

Mental state examination takes place throughout the clinical interview.

344
Q

A 46-year-old woman has depression not responding to antidepressants. She is constipated and has gained weight. Which one is the best screening test for detecting subclinical hypothyroidism?

A

Thyroid stimulating hormone assay

The best screening test for detecting subclinical hypothyroidism is an assay of TSH hormone levels.

345
Q

Which of the following supports a diagnosis of schizophrenia rather than mania?
Select one:
Hearing voices telling the patient that he is ‘powerful’
Perception of colours as vivid
Visual hallucinations of small animals
Hyperacusis
Hearing voices originating inside the body

A

Hearing voices originating inside the body

Coenaesthetic hallucinations (that emanate from body parts) are suggestive of schizophrenia
The correct answer is: Hearing voices originating inside the body

346
Q

Choose the most correct statement about the phenomenon of depersonalization seen in several psychiatric disorders.
Select one:
It is easily distinguished from derealisation
Insight is often impaired
It is an objective experience
It is associated with an unpleasant emotional state
It is not experienced by people without any mental health issues

A

It is associated with an unpleasant emotional state

Depersonalization is an unpleasant subjective experience where the patient feels as if they have become ‘unreal’. It is a non-specific symptom occurring in many psychiatric disorders as well as in healthy people during periods of fatigue, stress, etc.

347
Q

“Patient affirms she has no brain, no nerves, no chest, no stomach, no intestines; there’s only skin and bones of a decomposing body. She has no soul, and she is nothing more than a decomposing body”. This description is characteristic of:

A

Nihilistic delusions

Patients with psychotic depression may exhibit nihilistic delusions where they deny the normal functioning and existence of their body, self, others and the world around them. The example in this question is a translated excerpt from Cotard’s original case of a 43-year-old woman described in 1880.

348
Q

Which of the following describes a delusional perception?
Select one:
Stimulus in one modality experienced in another
No stimulus, abnormal perception
Normal perception, delusional meaning
No stimulus, delusional meaning
Abnormal perception, abnormal meaning

A

Normal perception, delusional meaning

Delusional perception is a primary delusion, which arises as a result of a normal perception. The percept is a real external object and not a hallucinatory experience.

349
Q

Obsessional slowness is common in which type of obsession?

A

Obsession of symmetry

An obsessive need for symmetry and exactness and a compulsion to sort and arrange results in slowness.

350
Q

Which of the following pertains to human research ethics?
Select one:
Birmingham code
NICE Guidelines
Newcastle declaration
Nuremberg code
None of the above

A

Nuremberg code

The interest in research ethics was stimulated by the atrocities committed during Second World War. Numerous unethical experiments including forceful sterilization, treacherous poisoning, inducing malaria and typhus, high-altitude experiments and severe dehydration were conducted by Nazi doctors on prisoners at concentration camps. A series of trials took place at Nuremberg following the world war and a code for human experimentation was set up. This is popularly called as Nuremburg code.

351
Q

Which culture-bound syndrome literally means ‘nerve weakness’?

A

Shenjing shuairuo

Shenjing shuairuo is a culture-bound syndrome seen in China. Literally means “nerve weakness.” Symptoms include - chronic fatigue, dizziness, headaches, sleep difficulties, nonspecific, and multiple somatic complaints. These conditions are likely related to depression, anxiety, fibromyalgia, chronic fatigue, and irritable bowel syndromes.

352
Q

Social role valorisation is best described as

A

Social acceptance of people with disabilities without devaluation

Social role valorisation is best described as a concept formulated in 1983 by Wolf Wolfensberger as the successor to the principle of normalization that deals with the enablement, establishment, enhancement, maintenance, and/or defense of valued social roles for people. SRV is primarily a response to the historically universal phenomenon of social devaluation and especially societal devaluation.

353
Q

A 30-year-old couple move from India to the UK. The man is a doctor and his wife is a teacher. They have two children who are pre-school. The couple soon settles down in a friendly neighbourhood. Later, the husband’s parents join the family. Who is most likely to develop biculturalism?

A

The children

Children adapt more easily and develop biculturalism more frequently than adults and the elderly when immigrating.

354
Q

Cultural formulation includes all of the following except:
Select one:
Acknowledging cultural elements in the patient-therapist relationship
The therapist’s view of the patient’s cultural identity
Considering cultural explanations of exhibited distress
Identifying the influence of the psychosocial environment on disease presentation
Making diagnosis in the context of patient’s background culture

A

The therapist’s view of the patient’s cultural identity

The patient’s own view of his cultural identity is more important than the therapist’s view.

355
Q

Who raised the question “Is there such a thing as mental illness?” and argued against the existence of mental illnesses?

A

Thomas Szasz

Thomas Szasz, a prominent anti-psychiatrist, argued against the existence of mental illness. The book ‘Myth of mental illness’ was written by him.

356
Q

Which of the following determines one’s cultural identity?
Select one:
Upbringing and choice
Place of birth
Attitudes and behaviour
Language and knowledge
Socioeconomic restraints

A

Upbringing and choice

Race is perceived as a permanent entity determined by genetic ancestry and characterised by physical appearance.
Culture is perceived as a changeable entity determined by upbringing and choice and characterised by behaviours and attitudes.
Ethnicity is perceived as partially changeable entity determined by social pressure and psychological need characterised by a sense of group identity and belonging.

357
Q

The right action is the one that has the best foreseeable consequences. This is known as:

A

Utilitarian moral theory

Consequentialist moral theories are teleological: they aim at some goal state and evaluate the morality of actions in terms of progress toward that state.
The best-known version of consequentialism is utilitarianism. As most clearly stated by Mill (who was a proponent of the utilitarianism), the basic principle of utilitarianism is: Actions are right to the degree that they tend to promote the greatest good for the greatest number.
In contrast, deontological principles are duty-based. Kant’s theory is an example of a deontological or duty-based ethics: it judges morality by examining the nature of actions and the will of agents rather than goals achieved. A deontological theory looks at inputs rather than outcomes.

358
Q

Which of the study is associated with deliberate infection in people with learning disabilities?

A

Willowbrook School Study

Willowbrook School Study (1963 - 1966): Willowbrook State School, situated in New York State, was an institution for mentally handicapped children. Parents of children in the institution gave consent for their children to participate in a study. The intent of the research study was to follow the course of viral hepatitis and study the effectiveness of an agent for inoculating against hepatitis. Parents were provided with study information describing the drug administration as vaccinations. However, the children were deliberately infected with the hepatitis virus. There is evidence that the school only admitted children to the school whose parents gave permission for them to be in the study.

359
Q

Which of the following is a new mental health disorder under ICD-11?
Select one:
Trichitillomania
Prolonged grief disorder
Sadomasochistic disorder
Hyperkinetic disorder
Acute stress reaction

A

Prolonged grief disorder

Prolonged grief disorder is a new mental health disorder under ICD-11 categorised under disorders specifically associated with stress. It describes a persistent and disabling grief reaction, which lasts longer than 6 months and is out of keeping with what is expected for the cultural context.
‘Trichotillomania’ was in ICD-10, as was hyperkinetic disorder, which has now been re-categorised as ADHD. Sadomasochism and other consensual sexual practices are no longer generally considered to be pathological.
‘Acute stress reaction’ is no longer seen as a mental health condition, but as a normal reaction to extreme stress. It is categorised under factors influencing health status or contact with health services.

360
Q

Fear of turning into a cannibal is one of the important features of which culture-bound syndrome?

A

Wendigo psychosis

361
Q

Tom has history of severe alcohol dependence. He has been given disulfiram to reduce the frequency of drinking alcohol. This is an example of:

A

Aversive conditioning

Aversive conditioning: This is an operant conditioning where punishment is used to reduce the frequency of target behaviour e.g. the use of Disulfiram (noxious stimuli) to reduce the frequency of drinking alcohol.

362
Q

Timmy has a pet mouse which he spends time with. As part of a psychological experiment, his father creates a loud noise whenever Timmy is playing with his mouse, and the noise frightens Timmy. This is done a number of times, so that whenever Timmy sees his pet mouse, he feels frightened. Which of these is now classed as the conditioned stimulus?

A

The mouse

The mouse was previously a neutral stimulus; it has been associated with an unconditioned stimulus (the noise) that naturally triggers an automatic response in Timmy (fear). The mouse therefore becomes a conditioned stimulus, eliciting fear in Timmy.

363
Q

A psychologist is involved in treating a patient with fear of heights. He requested the patient to imagine standing on top of the building without actual real exposure to them. The psychological principle employed here is:

A

Implosion

Flooding is an operant conditioning technique where actual exposure to feared stimulus takes place for a substantial amount of time so the accompanying anxiety response fades away while the stimulus is continuously present. This will lead to extinction of fear. When a similar technique is attempted with imagined exposure then it is called implosion.

364
Q

There is no processing involved in which of the following types of memory?
Select one:
Recent memory
Short term memory
Sensory memory
Remote memory
Long term memory

A

Sensory memory

Sensory memory: This is modality specific, has a large capacity but gets disrupted by an inflow of new information in the same modality. Each sense has its own sensory memory e.g. iconic (visual), echoic (auditory). Iconic lasts for 0.5 seconds while echoic lasts for 2 seconds.
No processing is involved in sensory memory. Information that is attended to is transferred to short-term memory store, and information that is not selected for processing is rapidly lost.
The correct answer is: Sensory memory

365
Q

All are examples of secondary drive except
Select one:
Dominance
Comfort
Achievement
Sex
Socialisation

A

Sex

Drives refer to purposeful activity initially produced to satisfy an internal need. Drives are commonly divided into primary and secondary drives.
Examples of primary drives are eating, drinking, sex.
Examples of secondary drives are affection, comfort, achievement, dominance and socialisation. The secondary drives acquire their values through their association with primary drives and often through a social learning process.

366
Q

A child received generous praise from her parents every time when she wrote a letter of the alphabet. She was praised more when she managed to write a full word. She was rewarded more generously when she wrote a sentence. Which reinforcement is taking place?

A

Shaping

Shaping is an operant conditioning method for producing an entirely new behaviour by using rewards to guide an organism toward a desired behaviour (called ‘successive approximations’). The organism is rewarded with each small advancement in the right direction.

367
Q

Which of the following is one of the maladaptive traits that can be used to further describe a diagnosis of personality disorder in ICD-11?

A

Dissociality

The maladaptive traits that can be used to describe a diagnosis of personality disorder in ICD-11 are: negative affectivity, detachment, dissociality, disinhibition and anankastia. A further qualifier of ‘borderline pattern’ can also be used.

368
Q

A girl is learning to write. Her father praises her for holding the pencil correctly, then for scribbling something on a piece of paper and writing something vaguely which resembles like a letter. The learning theory principle employed here is:

A

Shaping

Shaping is a teaching technique by which a child is rewarded for a successful approximation of a target skill. If a child is learning to write his or her name, say “Alex,” a teacher would shape the responses by starting with the letter A and providing the other letters: The next step would be perhaps for the child to write the first and last letters independently. The process would continue until the child can write his name independently.

369
Q

Which of the following concepts is reflective of a change in ICD-11 (from ICD-10)?
Select one:
Use of dimensional approach for all disorders
Removal of minimum symptom count for all disorders
Introduction of gender incongruence as mental health disorder
Cultural considerations have been removed
All disorders can be diagnosed at any age

A

All disorders can be diagnosed at any age

ICD-11 takes a lifespan approach to diagnosis, permitting diagnoses which were usually associated with childhood or adolescence, such as attachment or conduct disorder, to be diagnosed at any age. It specifically considers the cultural background of a patient in diagnosis. A dimensional approach has been taken in personality and primary psychotic disorders, as well as for depressive episodes in mood disorders. Minimum symptom counts have been removed from diagnostic criteria for most disorders, but not major depression. Gender incongruence, replacing gender identity disorder, has been moved to the sexual health chapter of ICD-11 as it is not a mental health disorder.

370
Q

Who proposed the two-factor theory of intelligence?

A

Spearman

The two-factor theory of intelligence was postulated by Spearman. Spearman carried out a factor analysis of the result of children’s performance on a number of tests and concluded that all tests measured both a common factor of general intelligence (g) and a specific factor (s). He believed that individual differences were due to differences in (g).
According to Sternberg, component intelligence is used for executive tasks and experiential intelligence is used for routine tasks that have already been learnt or mastered.

371
Q

A 22-year-old man is most likely to fall under which stage of Erikson’s psychosocial development?

A

Intimacy vs. isolation

During young adulthood (between the ages of 20 and 40), a life crisis of intimacy vs. isolation occurs. The outcomes are love and commitment/superficial relationships.

372
Q

In Piaget’s theory the development of object permanence occurs during which stage?

A

Sensorimotor stage

Jean Piaget, a Swiss psychologist, believed that intelligence is the product of a natural and inevitable sequence of developmental stages. He did not suggest that it was simply born, but rather that it developed as a result of the constantly changing interaction of the child and the environment.
He also believed that the child went through different stages of development, and each stage is characterised by qualitatively different ways of thinking about the world. The earliest of these stages is the sensorimotor stage (birth to 2) when the baby differentiates self from objects, recognises self as agent of action and begins to act intentionally. The baby also develops object permanence i.e. an object that is not seen can continue to exist.

373
Q

A child who is observed to have a ‘secure attachment pattern’ in the strange situation experiment will show which of the following? Select one:
Shows discomfort for being alone and not for mother’s absence
Rejecting, hostile and intrusive
Terrified and frozen when the mother returns
Shows discomfort when mother leaves but not for being alone
Strongly resists mother’s attempts at reconciliation

A

Shows discomfort when mother leaves but not for being alone

In secure attachment pattern, the child uses the mother as a secure base, explores freely, may be distressed at separation but greets positively on the reunion, seeks comfort, settles down and returns to exploration. Secure infants anticipate that their caregiver is accessible and available to them for comfort when necessary, and their primary carer is sensitive to the infants’ signals and cues.

374
Q

Which of the following is a risk factor for abuse during childhood?
Select one:
Single parent family
Mother’s age more than 28
Internal conflicts that are resolved in the family
Family having a network of frequently visiting friends
Family with children aged older than 7

A

Single parent family

The rate of child abuse in single parent households is 27.3 children per 1,000, which is nearly twice the rate of child abuse in two-parent households (15.5 children per 1,000).

375
Q

All of the following are risk factors that could be targeted to reduce delayed language development in children except Select one:
Smoking in pregnancy
Consumption of alcohol in pregnancy
Behavioural problems in the child
Inadequate cognitive stimulation
Small family size

A

Small family size

A large sized, overcrowded family is associated with more delays in language development.

376
Q

Which theory explains how boys ‘learn to become boys’ and girls ‘learn to become girls’?

A

Social learning

Social learning theorists identified specific sex-typed behaviours (Mischel, 1970). A behaviour is sex-typed when it is more expected and therefore seen as appropriate when performed by one sex, but less expected and therefore seen as inappropriate when performed by the other sex. Gender socialisation works, according to social learning theorists, by rewarding children for engaging in sex-typed behaviour that is consistent with their assigned sex category. The classic example is crying; while a little girl may be soothed when she cries, a little boy may be told that boys don’t cry. Crying is a sex-typed behaviour, seen as OK for girls and therefore not a punishable behaviour. But because it is not seen as an appropriate behaviour for boys, the little boy may be punished or corrected for his crying behaviour. Through these kinds of interactions, gender socialisation occurs.

377
Q

The social behaviour of buying dolls as gifts for girls and cars for boys is linked to which concept?

A

Social learning

According to the social learning theory, a child learns several gender-related behaviours through reinforcement and modeling (Golombok & Fivush, 1994). This is acquired first through parents who give the child his or her initial social position. Parents begin this process by typically encouraging sons to be more independent, competitive and achieving than they do for daughters (Lamb, 1986; Block, 1979). Parents also encourage daughters to be more passive and to seek protection (Chafetz, 1978). There have been differences shown in the reinforcement fathers and mothers give to sons and daughters. Even parents who strive to be egalitarian in their dealings with their children have been found to discourage certain non-traditional play behaviours more in one gender than the other. For example, parents are more likely to discourage their sons from playing with dolls than they are to discourage their daughters from playing with trucks (Weisner & Wilson-Mitchell, 1990). This behaviour on the part of parents (and others in the society) serves to model and reinforce gender stereotyped behaviours in children.

378
Q

‘A child studies inner and outer world via senses but perceives mother and self as one unit’. This refers to which stage of Mahler’s theory?

A

Symbiosis

The stage of normal autism lasts from 0 to 2 months. Here the child spends most time in sleep, as if the intrauterine aloofness continues.
The stage of symbiosis lasts from 2 to 5 months. Here, inner and outer world is studied by the child via senses but perceives mother and self as one unit.

379
Q

What is the incidence of fatal hepatotoxicity with valproate?

A

1 in 100,000

In those taking valproate alone: 1 in 100,000 patients.
Risk factors for hepatotoxicity include young age (less than ten years old), sensitivity during the first few months of treatment, severe epilepsy, and use of multiple drugs.

380
Q

A 65-year-old man develops recurrent UTI since starting an antidepressant. He also gives a history suggestive of new onset prostatism. But prostate examination shows no enlargement. The most likely offending agent is:

A

Amitriptyline

Drugs with significant anticholinergic properties such as amitriptyline notoriously cause signs of prostatism in elderly males. They may produce urinary retention and sometimes bladder distension.

381
Q

A patient has a history of psychotic depression and is on combination treatment with antipsychotics and antidepressants. He appears slightly flushed, with dry mouth, dry skin, feeling hot, and confused. He is exhibiting features of:

A

Anticholinergic syndrome

Anticholinergic syndrome results from the inhibition of cholinergic neurotransmission at muscarinic receptor sites. Psychotropics such as phenothiazines, tricyclic antidepressants and antiparkinsonian agents have anticholinergic properties. When they are administered in combination, the action of these drugs becomes additive resulting in anticholinergic syndrome. Features of a mild organic brain syndrome, which includes disorientation, difficulty in concentrating and impaired short-term memory are seen, especially noticeable at nighttime. Other physical symptoms include flushing, dry skin and mucosa, mydriasis with loss of accommodation and fever.

382
Q

Patients on tranylcypromine should not take an excess of
Select one:
Swede
Banana
Cheese
Potatoes
Salt

A

Cheese

Cheese can induce tyramine related reaction in those on MAOIS.

383
Q

Which of the following antipsychotics is associated with photosensitivity more than others listed?
Select one:
Olanzapine
Quetiapine
Haloperidol
Chlorpromazine
Risperidone

A

Chlorpromazine

Allergic dermatitis and photosensitivity can occur with low-potency agents. Long-term chlorpromazine use can cause blue-gray discoloration of skin areas exposed to sunlight. This is reversible.
Irreversible retinal pigmentation is associated with the use of high dose thioridazine (above 1000 mg a day).

384
Q

A 56-year-old gentleman suffers from a severe depressive episode. He has a history of bipolar affective disorder. He is on maintenance treatment with Lithium for five years. What is the most appropriate drug to treat his depression?

A

SSRI e.g. citalopram

The risk of inducing a switch to mania is less with SSRIs and more with other classes of antidepressants such as TCAS, MAOIS and SNRIs.

385
Q

Which of the following drugs is used in the treatment of akathisia?
Select one:
Procyclidine
Atrophine
Trihexyphenidyl
Clonazepam
Benperidol

A

Clonazepam

Treatments for akathisia include reducing the antipsychotic drug or change to an atypical drug. A reduction in symptoms of akathisia may be seen with propranolol, clonazepam, mirtazapine, trazodone, mianserin and cyproheptadine.

386
Q

Which of the following drugs can cause severe rebound hypertension when stopped?
Select one:
Risperidone
Venlafaxine
Duloxetine
Paroxetine
Clonidine

A

Clonidine

Clonidine is an alpha-2 adrenergic receptor agonist. Agonist effects at these receptors, which are located presynaptically in adrenergic neurons, reduce the release of epinephrine from these neurons.

387
Q

10-year-old boy with Tourettes’ syndrome. He has had a medication for treating his condition, which has lead to significant weight gain. Choose the best alternative?
Select one:
Risperidone
Clonidine
Haloperidol
Pimozide
Olanzapine

A

Clonidine

Weight gain may be more pronounced in children than adults with antipsychotics and this may limit their use. Clonidine has been shown in open studies to reduce the severity and frequency of tics and could bring a substantial reduction in tics.

388
Q

Which of the following statement regarding lithium is NOT true?
Select one:
Oral preparations may have different bioavailability
Hypothyroidism is more common in middle-aged women taking lithium
ECG changes can be seen even at therapeutic doses
Coarse tremor is a common side effect
Peripheral limb oedema is a recognised side effect of lithium use

A

Coarse tremor is a common side effect

Lithium chloride causes a concentration dependent block of the peak sodium current in cardiac pacemakers, but even at therapeutic doses, abnormal ECG can be documented, often with no clinical implications.
Fine hand tremor is a common side effect often seen at lower doses; coarse tremor indicates toxicity.

389
Q

Co-agonists glycine and D-serine act on which of the following receptors? Select one:
AMPA
Serotonergic
Adenosine
Muscarinic
Kainate

A

AMPA

D-serine is an endogenous ligand for the glycine site of the N-methyl-D-aspartate receptor. Some recent studies suggest that there is a low affinity and stereo-selective site at the agonist-binding pocket of AMPA receptors as well for D-amino acids such as d-serine.

390
Q

The constituents of khat have action that has greatest similarity to which drug?

A

Amphetamine

The fresh leaves of Catha edulis from East Africa were used as a stimulant for amphetamine-like effects from the main ingredient cathinone. Cathinone has most of the CNS and peripheral actions of amphetamine. It is typically absorbed buccally after chewing the leaf and being an alkaloid, gets metabolized rapidly with low chances of toxicity.

391
Q

A 56-year-old woman on treatment with clozapine has some residual symptoms and a BMI of 27. The ideal drug of choice for adjunctive treatment is:

A

Aripiprazole

The addition of aripiprazole to clozapine may be particularly effective in reversing metabolic effects (such as weight gain) and could be used as an augmenting agent to clozapine.

392
Q

The mechanism of action of cyproterone acetate is

A

Blocks testosterone receptors

The mechanism of action of cyproterone acetate is to block testosterone receptors. The direct antiandrogenic effect of cyproterone is to block the binding of dihydrotestosterone to the specific receptors in the prostatic carcinoma cell. In addition, cyproterone exerts a negative feed-back on the hypothalamo-pituitary axis, by inhibiting the secretion of LH resulting in diminished production of testicular testosterone.

393
Q

Which of the following drugs acts as a partial mu receptor agonist?
Select one:
Acamprosate
Buprenorphine
Disulfiram
Methadone
Buspirone

A

Buprenorphine

Buprenorphine is a partial agonist at the mu-opioid receptor and has a reduced risk of fatal respiratory depression.

394
Q

Which of the following atypical antidepressants have dopaminergic and noradrenergic actions?
Select one:
Bupropion
Mirtazapine
Venlafaxine
Reboxetine
Mianserin

A

Bupropion

Bupropion is an atypical antidepressants with dopaminergic and noradrenergic actions, and it has been advocated by NICE for smoking cessation.

395
Q

The drug used in treatment of REM sleep behavioural disorder is

A

Clonazepam

Treatment with clonazepam has shown to be effective in REM sleep behavioural disorders.

396
Q

Which of the following acts on presynaptic receptors as main mechanism of action?
Select one:
Phenelzine
Propronalol
Donepezil
Diazepam
Clonidine

A

Clonidine

Clonidine is a sympatholytic medication, which is classified as a centrally acting a2-adrenergic agonist. It has specificity towards the presynaptic a2 receptors in the vasomotor center in the brainstem.

397
Q

A patient has chronic schizophrenia and is on clozapine therapy. If you want to try augmentation, which one should be avoided?
Select one:
Carbamazepine
Sodium valproate
Aripiprazole
Fluoxetine
Lithium

A

Carbamazepine

The combination of carbamazepine and clozapine is generally contraindicated. First, carbamazepine and clozapine each produce hematologic side effects at higher frequencies than do most other available drugs. Another consideration is that carbamazepine lowers the level of clozapine, possibly more than it lowers levels of traditional neuroleptics.

398
Q

A patient was started on a mood stabiliser when she was diagnosed with bipolar affective disorder type 2. Her psychiatrist says that the dose needs to be carefully titrated as the prescribed mood stabiliser induces its own metabolism. What has been prescribed?

A

Carbamazepine

Carbamazepine has a tendency to induce its own metabolism leading to reduced plasma steady state levels.

399
Q

Which of the following does not increase tricyclic antidepressant concentrations?
Select one:
Cigarette smoking
Haloperidol
Quetiapine
Methylphenidate
Risperidone

A

Cigarette smoking

Antipsychotics, methylphenidate, acetazolamide, aspirin, cimetidine, thiazides, fluoxetine and sodium bicarbonate increase tricyclic antidepressant (TCA) concentrations. Cigarette smoking decreases their concentration through its action on the CYP1A2 enzyme.

400
Q

The antidepressant with the longest mean half-life from the given list is:
Select one:
Fluvoxamine
Venlafaxine
Citalopram
Paroxetine
Trazodone

A

Citalopram

Fluoxetine has the longest half-life of all the SSRIs, one to three days, because of a metabolite. Paroxetine, the SSRI with a long t1/2 compared to the others, has a half-life of only 21 hours.

401
Q

A patient who is prescribed disulfiram to aid alcohol abstinence, presents to Accident and Emergency room with facial flushing, hypotension, tachycardia, nausea, and vomiting. She denies any recent ingestion of alcohol. Which of the following could have caused her symptoms?
Select one:
Walnuts
Mature cheese
Banana
Chocolate
Cough syrup

A

Cough syrup

Cough and cold medications bought over the counter often contain alcohol and can precipitate a disulfiram reaction. Severe Antabuse reaction (also known as disulfiram reaction) is characterised by respiratory depression, seizures, cardiovascular collapse, and even death.

402
Q

A barbiturate-dependent patient shows little pharmacological response to administration of benzodiazepines. This is called:

A

Cross-tolerance

Cross-tolerance refers to decreased response to one medication due to exposure to a different medication. Here exposure to barbiturates has produced cross-tolerance to benzodiazepines.

403
Q

The benzodiazepine with the longest half life in a young adult is

A

Diazepam

Diazepam is a benzodiazepine which has a very long elimination half-life (20 - 100 hours with an active metabolite 36 - 200 hours); as a result withdrawal symptoms are not very common with diazepam.

404
Q

When administered orally, the benzodiazepine that produces the most rapid onset of action is:

A

Diazepam

Diazepam has the most rapid onset of action among orally administered benzodiazepines.

405
Q

You are treating an Afro-Caribbean man with schizophrenia using clozapine. What is the biggest risk factor for developing reduced white cell count?

A

Ethnicity

There is a 77% increase in risk for Afro-Caribbean people to develop clozapine-induced neutropenia. Other risk factors include young age and having a low baseline white cell count.

406
Q

34-year-old woman with a history of epilepsy with generalised seizures. She experiences auras preceding these seizures that are characterised by a profound sense of familiarity with her surroundings, even if she is in an entirely new environment. Seizure activity in which of the following areas of the brains is most likely to account for these symptoms?

A

Temporal lobe

Seizures originating in the medial temporal lobe are most likely to lead to a sense of déjà vu.

407
Q

A 62-year-old woman with a history of hypertension and hypercholesterolemia presented with sudden onset of weakness of the right side. On examination, she had mild aphasia, with notable difficulties in word finding and naming objects shown to her. Which of the following brain structures is crucial for the function of object naming?

A

Parietal lobe

“Two gyri in the parietal lobe are important to locate and become familiar with in regard to language. The first is the supramarginal gyrus (area 40), which curves around the posterior end of the lateral sylvian fissure. The second, the angular gyrus (area 39), lies directly posterior to the supramarginal gyrus. It curves around the end of a prominent sulcus in the temporal lobe, the superior temporal sulcus (see Fig. 2-5). Damage in the area of the angular gyrus in the dominant left hemisphere may cause word-finding problems (anomia), reading and writing deficits (alexia with agraphia), as well as left-right disorientation, finger agnosia (inability to identify the fingers), and difficulty with arithmetic (acalculia).”

408
Q

55-year-old man who, for the past 6 months, has experienced muscle twitches and spasms, ataxia, slurred speech and paraesthesia in different areas of the body. According to the neurologists, one of the differential diagnoses is CJD. He undergoes MRI investigation. If he does indeed have CJD, the following areas of the brain are likely to be affected with the exception of:
Select one:
Pineal gland
Thalamus
Cortex
White matter
Basal ganglia

A

Pineal gland

CJD is characterised by bilateral basal ganglia hyper-intensities (Pulvinar sign) on T2W and DWI MRI.

409
Q

A patient consults you over the psychological impact of his sleep deprivation. He’s been reading up on circadian rhythms and asks you which part of the brain is involved in the regulation of circadian rhythms. The correct answer is:

A

The suprachiasmatic nucleus

The suprachiasmatic nucleus is a region of the brain in the hypothalamus, situated directly above the optic chiasm, responsible for controlling circadian rhythms, by communication with many other regions of the brain and the use of various peptides and neurotransmitters.

410
Q

MAO-A metabolizes

A

Noradrenaline, 5-HT and tyramine

MAO-A metabolizes noradrenaline, 5-HT and tyramine. MAO-B metabolizes dopamine, tyramine and phenethylamine.

411
Q

MAO-B metabolizes

A

Dopamine, tyramine and phenethylamine

MAO-A metabolizes noradrenaline, 5-HT and tyramine. MAO-B metabolizes dopamine, tyramine and phenethylamine.

412
Q

Which of the following enzymes in the monoamine synthetic pathway is largely restricted to adrenal medulla?
Select one:
Tyrosine-3-hydroxylase
Phenylethanolamine-N-methyltransferase
L-Aromatic amino acid decarboxylase X
Dopamine-beta-hydroxylase
Phenylalanine-4-hydroxylase

A

Phenylethanolamine-N-methyltransferase

The occurrence of phenylethanol-amine-N-methyltransferase is largely restricted to the adrenal medulla, but with detectable levels in association with epinephrine neurons in the brain. Inhibition of enzyme activity decreases epinephrine biosynthesis. There is, however, a less specific N-methyl-transferase present in many tissues.

413
Q

Which of the following is correct with respect to the use of LSD?
Select one:
It is often injected
Frequent use commonly causes tolerance
Onset of action is delayed for 2 hours in most subjects
Physiological withdrawal is not seen
It is available as a prescribed drug

A

Physiological withdrawal is not seen

LSD is primarily used via oral administration but can be inhaled, injected, and transdermally applied. The onset of effects is rapid following intravenous administration (10 minutes). Following oral ingestion, the onset of the first effects are experienced in 20-30 minutes. Frequent, repeated doses of LSD are unusual, and therefore tolerance is not commonly seen. Tolerance does develop to the behavioral effects after 3-4 daily doses, but no withdrawal syndrome has been described.

414
Q

Which of the following findings is seen in patients who have attempted to commit suicide?
Select one:
Reduced levels of prolactin
Reduced 5-HIAA
Reduced glutamate levels
Reduced levels of TSH
Reduced choline levels

A

Reduced 5-HIAA

Reduced homovanillic acid/5-hydroxyindolacetic acid (HVA/5-HIAA) ratios in cerebrospinal fluid (CSF) in depressed suicide attempters have been reported. The levels of norepinephrine (NE), dopamine (DA) serotonin (5-HT) and its metabolite 5-hydroxyindole acetic acid (5-HIAA) are reduced in those attempting suicide compared to healthy controls. A large effect size drop in 5-HIAA suggested that CSF 5-HIAA level may be used as an early biochemical indicator of a suicidal attempt.

415
Q

If a patient with terminal cancer related pain is administered morphine for analgesia, which of the following mechanism could explain the action?
Select one:
Release of substance P
Release of histamine
Release of serotonin
Release of glycine
Release of glutamate

A

Release of histamine

It is believed that p-receptor agonist morphine causes the release of histamine in neurons leading to H2 receptor activation and subsequent relief of pain.

416
Q

Synthesis and storage of noradrenaline can be prevented by which of the following?
Select one:
Guanethidine
Tyramine
Tryptophan
Tyrosine
Reserpine

A

Reserpine

Reserpine prevents the synthesis and storage of norepinephrine in sympathetic nerve terminals.

417
Q

Impulsive aggression is related to a disruption in which of the following neurotransmitter systems?
Select one:
Glutamate
Norepinephrine
Dopamine
Acetylcholine
Serotonin

A

Serotonin

One of the most consistent findings in all of psychobiology is the link between low serotonin in the brain and impulsive, explosive acts of violence.

418
Q

Which of the following is a peptide neurotransmitter?
Select one:
Glutamate
Serotonin
Dopamine
Substance P
Acetylcholine

A

Substance P

Substance P is a neuroactive peptide synthesized in the cell body on the rough endoplasmic reticulum.

419
Q

In a patient with panic attacks secondary to phaeochromocytoma, which of the following metabolites indicate excess of noradrenaline? Select one:
Homovanilic acid
Aspartic acid
mCPP (m-chlorophenylpiperazine)
Vanillylmandelic acid
5-Hydroxyindoleacetic acid

A

Vanillylmandelic acid

Vanillylmandelic acid - also called VMA, is the major metabolite used to detect phaeochromocytoma. It indicates noradrenaline excess.
mCPP is a metabolite of trazodone.
5-HIAA is a serotonin metabolite.

420
Q

In CJD, the amyloid plaques are prominent in which part of the brain?

A

Cerebellum

CJD is a type of multifocal dementia involving the cerebellar structures, where amyloid plaques are prominent.

421
Q

Normal adults enter deep sleep from wakefulness before entering REM sleep. But infants enter REM sleep directly from wakefulness. When does the adult pattern of sleep develop in a child?
Select one:

A

3 months

Newborns sleep for 16 - 18 hours daily though the longest sleep episode lasts only 2.5 to 4 hours. Newborns have three types of sleep: quiet sleep (similar to NREM), active sleep (analogous to REM), and indeterminate sleep. Sleep onset occurs through REM, unlike adults where it occurs through NREM. In infants, each sleep episode is made of only one or two cycles (instead of 4 or more in adults). This infantile sleep architecture disappears when circadian rhythms are fully entrained.
Circadian rhythm development in the first 3 months includes:
* emergence of the 24-hour core body temperature cycle (1 month of age)
* progression of nocturnal sleeping (2 months of age)
* cycling of melatonin and cortisol hormones in a circadian rhythm and sleep onset begins with NREM (3 months of age)

422
Q

A 40-year-old man presents with gradually developing darkening of the skin most visible on scars, skin folds and pressure points. Following a trivial driving accident, he notices extreme fatigue, muscle weakness and weight loss. The most commonly used definitive test for this condition is:
Select one:
Skin Biopsy
ELISA serology
Prolactin Test
ACTH stimulation test
Fasting glucose

A

ACTH stimulation test

This patient has Addison’s disease which, due to insidious onset, often goes unnoticed until something else brings the symptoms to notice. The ACTH stimulation test is the most commonly used test for diagnosing adrenal insufficiency. In this test, blood cortisol, urine cortisol, or both are measured before and after a synthetic form of ACTH is given by injection. The normal response after an ACTH injection is a rise in blood and urine cortisol levels. People with Addison’s disease or long-standing secondary adrenal insufficiency have little or no increase in cortisol levels.

423
Q

During relaxed periods of wakefulness, a normal individual’s EEG will display which rhythm?

A

Alpha rhythm

During states of quiet wakefulness or drowsiness, the EEG pattern becomes slower (8 to 13 Hz with an average amplitude of 50 V) than what is seen during an alert state. This constitutes the alpha rhythm.

424
Q

Raclopride is a compound used in imaging brain receptors. Which of the following receptors are blocked by raclopride?

A

D2 receptors

Raclopride is a D2 antagonist that can be radiolabelled with the carbon-11 radioisotope for use in positron emission tomography (PET) scanning to assess the distribution of D2 receptors and the degree of endogenous dopamine binding to this receptor.

425
Q

What is a risk factor for antidepressant-induced SIADH (syndrome of inappropriate ADH secretion)?
Select one:
Low body weight
Male sex
High initial sodium level
Cold weather
Tuberculosis

A

Low body weight

Risk factors for antidepressant-induced SIADH include: Old age, low BMI, concomitant use of diuretics and female gender.

426
Q

25-year-old woman brought into A&E by her boyfriend who came home to find her very confused. He notes that she is on some medication but doesn’t know what it is. Her vital signs include pyrexia and a labile blood pressure, and on examination clonus in ankles. The most likely diagnosis is:

A

Serotonin syndrome

Serotonin syndrome is the excess of serotonin resulting in a constellation of symptoms including confusion, agitation, lability in blood pressure and temperature, tremor and clonus. To differentiate between neuroleptic malignant syndrome and serotonin syndrome - onset for serotonin syndrome is much shorter (usually < 12hours), it is associated with hyperreflexia and clonus (NMS is associated with hynoreflexia) dilated pupils and also hyperactive bowel sounds

427
Q

Memory & forgetting

Choose the term that best applies to the following description
Partial or total inability to recall past experiences and events

A

Amnesia

Amnesia is defined as partial or total inability to recall past experiences and events. Its origin may be organic or psychogenic.

428
Q

Memory & forgetting

Choose the term that best applies to the following description
Fluent plausible lying in those without organic brain pathology

A

Pseudologia fantastica

Pseudologia fantastica or fluent plausible lying (pathological lying) describes confabulation that can be seen in those without organic brain pathology, such as personality disorders/difficulties of the antisocial or dissocial type.

429
Q

Memory & forgetting

Choose the term that best applies to the following description
When new memories impede the retrieval of old material

A

Retroactive interference

Ordinary memory failure can be caused by interference from related material. In proactive interference, old memories interfere with new learning and hence with recall, while in retroactive interference new memories interfere with the retrieval of old material.

430
Q

Urine Drug Analysis

Choose the duration up to which the most probable illicit substance used in the following clinical scenario could be identified using urine drug analysis
An inpatient on a psychiatric ward with a long-standing history of paranoid schizophrenia and chronic cannabis use. He came back to the ward with paranoia and hearing voices.

A

4 weeks

Cannabis, if used occasionally stays in the system for three days. But on high daily use, it could stay in the body system even up to 4 weeks.

431
Q

Urine Drug Analysis

Choose the duration up to which the most probable illicit substance used in the following clinical scenario could be identified using urine drug analysis
43-year-old lady who has a borderline personality disorder with a history of heroin dependence and is being assessed in the drug and alcohol outpatients’ clinic.

A

1-3 days

Heroin could be detected in urine from 1 to 3 days, but methadone could be detected even after three days.

432
Q

Urine Drug Analysis

Choose the duration up to which the most probable illicit substance used in the following clinical scenario could be identified using urine drug analysis
16-year-old boy who presented with A&E with elated mood and admitted to taking ‘crack’

A

6-8 hours

Crack is a street name for cocaine, and it stays in the system for only 6-8 hours. However note that some of its non-specific metabolites can be detected up to 2-4 days.

433
Q

Urine Drug Analysis

Choose the duration up to which the most probable illicit substance used in the following clinical scenario could be identified using urine drug analysis
21-year-old gentleman admitted to the police station with irritability and assaultive behaviour. He admits to taking ‘angel dust’ at a party.

A

8 days

‘Angel dust’ is a street name for phencyclidine, which is an atypical hallucinogen, and it could detected in the urine for up to 8 days.

434
Q

Syndromes of substance use

Match the clinical presentation with the most appropriate intoxication or withdrawal syndrome.
A 35-year-old man presents with high anxiety, nightmares, profuse sweating, and insatiable hunger. He admits to feeling ‘low’ recently and thinking about hanging himself.

A

Cocaine withdrawal

Cocaine withdrawal is characterised by a ‘crash’ with symptoms of anxiety, tremulousness, dysphoric mood, lethargy, fatigue, nightmares (accompanied by rebound REM sleep), headache, profuse sweating, muscle cramps, stomach cramps, and insatiable hunger. The most serious withdrawal symptom is depression, which can be particularly severe and associated with suicidal ideation or behaviour.

435
Q

Syndromes of substance use

Match the clinical presentation with the most appropriate intoxication or withdrawal syndrome.
A 19-year-old woman describes feeling very well (despite her family’s concerns that she seems unlike herself), is slurring her speech, and is somewhat unsteady. She can’t stop giggling and repeatedly asks if she can have something to eat

A

Cannabis intoxication

Effects of cannabis intoxication include mild euphoria (‘the giggles’), a sense of enhanced well-being, a subjective sense of enhanced sensation, relaxation, altered time sense, and increased appetite (‘the munchies’). Physically, there is mild tachycardia and variable dysarthria and ataxia.

436
Q

Syndromes of substance use

Match the clinical presentation with the most appropriate intoxication or withdrawal syndrome.
A 55-year-old man is found on the street to be unresponsive and barely breathing. It is noted that his pupils are constricted

A

Heroin intoxication

Acute medical problems associated with heroin intoxication include nausea and vomiting, constipation, respiratory depression, and loss of consciousness with aspiration (the cause of many fatalities). Physical effects also include pupillary constriction and changes in blood pressure, heart rate, and body temperature.

437
Q

Syndromes of substance use

Match the clinical presentation with the most appropriate intoxication or withdrawal syndrome.
A 24-year-old woman presents with hallucinations and a feeling of being ‘outside’ herself, though she doesn’t seem particularly concerned. On examination, she is noted to be tachycardic and hypertensive, with bidirectional nystagmus.

A

Ketamine intoxication

Ketamine can cause hallucinations and a dissociated state in which the patient has an altered sense of the body and reality and little concern for the environment. On physical examination, the patient may be hypertensive and tachycardic, and have increased salivation and bidirectional or rotatory nystagmus.

438
Q

Stages of change

Choose the most suitable stage of change, as described by Prochaska & DiClemente, for each of the description.
A 44-year-old patient with serious social problems due to drinking is seemingly unaware of the consequences of his habit. He says, “Everyone has some or other problem. You can’t find a reason for all faults”.

A

Pre-comtemplation

In the pre-contemplation stage a person is not even considering changing his or her behaviour and does not see the behaviour as a problem. He or she minimizes the issue, denies associated risks and avoids information to the contrary.

439
Q

Stages of change

Choose the most suitable stage of change, as described by Prochaska & DiClemente, for each of the description.
A 23-year-old binge drinker seems to have an understanding of the pros and cons of her behaviour and longs for a change. She has not made any decisive step to alter her routines so far.

A

Contemplation

In the contemplation stage, the user may accept that there is a problem and begins to look at both the pros and cons of continued drug use. The person has become aware of why the behaviour is a problem but is ambivalent about changing.

440
Q

Stages of change

Choose the most suitable stage of change, as described by Prochaska & DiClemente, for each of the description.
The final stage within each cycle of the model described by Prochaska & DiClemente.

A

Relapse

Relapse is the final change in each phase. It is a return to previous behaviour but with the possibility of gaining useful strategies to extend the maintenance period on the user’s next attempt.

441
Q

Stages of change

Choose the most suitable stage of change, as described by Prochaska & DiClemente, for each of the description.
A 27-year-old alcoholic man has stopped drinking for last four months

A

Action

This is action stage, practising new behaviour for 3-6 months.

442
Q

Stages of change

Choose the most suitable stage of change, as described by Prochaska & DiClemente, for each of the description.
A 21-year-old heroin addict is trying to change his habit and is planning to act within 1 month

A

Ready for action

This is ready for action/preparation stage. There is some experience with change and is trying to change by ‘testing the waters’.

443
Q

Adverse effects of psychotropic medication (mood stabilsers)

Identify the drug most likely to have caused weight loss

A

Topiramate

Topiramate can cause nausea, appetite loss, and weight loss. Topiramate is an antiepileptic medication that is also used as an adjunct treatment for mood disorders and binge-eating disorder. One of its notable side effects is appetite suppression, which often leads to weight loss in individuals taking the medication. Patients may also experience nausea, which can contribute to decreased food intake and, consequently, weight loss.

444
Q

Adverse effects of psychotropic medication (mood stabilsers)

Identify the drug most likely to have caused worsening psoriasis

A

Lithium

Some skin conditions such as psoriasis and acne can be aggravated by lithium.

445
Q

Adverse effects of psychotropic medication (mood stabilsers)

Identify the drug most likely to have caused a rash

A

Lamotrigine

10-14% of patients receiving lamotrigine will develop rash. Most are benign. A minority may be serious/life-threatening skin reactions requiring hospitalisation (e.g., Steven- Johnson syndrome, toxic epidermal necrolysis, angio-oedema, and a rash associated with several systemic manifestations).

446
Q

Types of conduct disorder

Match the scenario to the description of type of conduct disorder
A 12-year old girl is repeatedly sent home for excessive fighting and bullying behaviour at school. She is noted to behave cruelly to animals or other people and has repeatedly destroyed school property. She has repeatedly run away from home as well. She states having no friends as “everyone around me is a moron”.

A

Unsocialised type

According to ICD-10, there are three subtypes: ‘conduct disorder confined to the family context’ (F91.0), ‘unsocialised conduct disorder’ (F91.1, where the young person has no friends and is rejected by peers) and ‘socialised conduct disorder’ (F91.2, where peer relationships are normal). Also note that ICD recommends that age of onset be specified, with childhood-onset type manifesting before 10 years and adolescent-onset type after 10 years. Note that DSM-5 endorses only the age-of-onset based subtypes. Nevertheless, DSM recognises that when compared to individuals with Childhood Onset Type, the adolescents are less likely to show aggression, but display more socialised pattern of peer relationships and less often show conduct problems that develops into an adult Antisocial Personality Disorder.

447
Q

Match the scenario to the description of type of conduct disorder
11 years old. He spends most of the time swearing, lying about his whereabouts, stealing others family members’ belongings and persistently breaking rules set by his parents. He also shows physical aggression to siblings, destruction of property, arguing, blaming others for things that have gone wrong, and a tendency to annoy and provoke everyone at home. His teachers report him to be below-average in school

A

Confined to the family context

According to ICD-10, there are three subtypes: ‘conduct disorder confined to the family context’ (F91.0), ‘unsocialised conduct disorder’ (F91.1, where the young person has no friends and is rejected by peers) and ‘socialised conduct disorder’ (F91.2, where peer relationships are normal). Also note that ICD recommends that age of onset be specified, with childhood-onset type manifesting before 10 years and adolescent-onset type after 10 years. Note that DSM-5 endorses only the age-of-onset based subtypes. Nevertheless, DSM recognises that when compared to individuals with Childhood Onset Type, the adolescents are less likely to show aggression, but display more socialised pattern of peer relationships and less often show conduct problems that develops into an adult Antisocial Personality Disorder.

448
Q

Match the scenario to the description of type of conduct disorder
14 years old. He has been noted to be repeatedly cruel to and hurting other people. With a group of friends he has been involved in multiple instances of assault, robbery using force, vandalism, breaking and entering houses, stealing from cars, driving and taking away cars without permission. He is also repeatedly truanting from school, and misusing alcohol and drugs.

A

Socialised type

According to ICD-10, there are three subtypes: ‘conduct disorder confined to the family context’ (F91.0), ‘unsocialised conduct disorder’ (F91.1, where the young person has no friends and is rejected by peers) and ‘socialised conduct disorder’ (F91.2, where peer relationships are normal). Also note that ICD recommends that age of onset be specified, with childhood-onset type manifesting before 10 years and adolescent-onset type after 10 years. Note that DSM-5 endorses only the age-of-onset based subtypes. Nevertheless, DSM recognises that when compared to individuals with Childhood Onset Type, the adolescents are less likely to show aggression, but display more socialised pattern of peer relationships and less often show conduct problems that develops into an adult Antisocial Personality Disorder.

449
Q

Tests of neuropsychological functioning

Choose the test that best assesses motor speed

A

Finger Tapping

Finger tapping is a standard measure of simple motor speed. It is particularly useful for documenting lateralised motor impairment.

450
Q

Choose the test that best assesses abstract reasoning

A

Interpreting Proverbs

Abstract reasoning is the ability to shift back and forth between general concepts and specific examples. Having the patient identify similarities between like objects or concepts (apple and pear, bus and airplane, or a poem and a painting) as well as interpreting proverbs are useful ways to assess one’s ability to abstract.

451
Q

Choose the test that best assesses working memory

A

Digit Span

Working memory is synonymous with short-term memory, which is responsible for the immediate recall of small amounts of verbal (as in digit span) or visuospatial information.

452
Q

Choose the test that best assesses visuospatial construction

A

Clock Drawing

Clock drawing is a useful technique for assessing constructional ability and is also sensitive to organisation and planning.

453
Q

Choose the test that best assesses set shifting

A

Wisconsin Card Sorting

The best formal test of set shifting is the Wisconsin Card Sorting Test, which also involves problem-solving and hypothesis testing.

454
Q

Disorders of Visual Perception

Choose the term that best applies to this scenario.
When a man with schizophrenia first looks at a friend’s face, it appears normal, but the face then transforms to be frighteningly grotesque and misshapen.

A

Paraprosopia

Metamorphopsia or dysmegalopsia refers to change in the perceived shape of an object. When metamorphopsia affects faces, it is referred to as paraprosopia. Faces generally transform into a grotesque mask (monster, vampire, werewolf). Autoparaprosopia is a term used to describe a phenomenon where an individual perceives a transformation or alteration in their own facial appearance while gazing into a mirror. Note that paraprosopia is a distortion of reality seen in conditions such as schizophrenia and is seen as a delusional misidentification similar to Capgras and Fregoli delusions), while the term prosopagnosia is an inability to identify faces seen in organic conditions affecting brain’s face recognition area.

455
Q

Choose the term that best applies to this scenario.
Despite not having any pets, an elderly woman with visual impairment intermittently sees cats in her apartment, which delight her.

A

Hallucination

Charles Bonnet syndrome is a condition in which complex visual hallucinations occur in the absence of any psychopathology and in clear consciousness. It is associated with either central or peripheral reduction in vision and not surprisingly is most common in the elderly, although it can occur in younger people also. These visual hallucinations can be accompanied by pleasure and amusement.

456
Q

Choose the term that best applies to this scenario.
Upon seeing a shadow, a recently bereaved man briefly thinks that it is his deceased wife.

A

Illusion

In illusions, stimuli from a perceived object are combined with a mental image to produce a false perception. Affect illusions arise in the context of a particular mood state. For example, a bereaved person may momentarily believe they ‘see’ the deceased person.

457
Q

Family Systems in Development

Identify the correct term for the following description.
Family members’ interactions are influenced by each other, which in turn are influenced by others.

A

Circular causality

Circular causality focuses on the reciprocal relationship between two events. While linear causality implies a process in which one event causes the occurrence of another, circular causality implies that one has influence over the other. Circular questioning is used in family therapy to yield information about the dynamics and relationships in a family.

458
Q

Family Systems in Development

Identify the correct term for the following description.
Over-involved relationships that develop from diffuse boundaries within family systems.

A

Enmeshment

Salvador Minuchin used the term enmeshment to describe the overinvolved relationships that develop from diffuse boundaries within family systems and between family members and other systems.

459
Q

Family Systems in Development

Identify the correct term for the following description.
Involvement of a child in a parental conflict to defuse tension within the interparental subsystem

A

Triangulation

In the family context, triangulation refers to the involvement of a child in a parental conflict to defuse tension within the interparental subsystem, and generally includes parents’ pressure on children to become involved as well as children’s self-directed attempts to intervene.

460
Q

Specialised Cells

Identify the cell responsible for rapid signal transmission between brain regions

A

Pyramidal cells

Pyramidal cells serve as the principal excitatory neurons responsible for rapid signal transmission between brain regions and cortical processing in the cerebral cortex.

461
Q

Specialised Cells

Identify the cell - principal neuron type in the cerebral cortex responsible for cortical processing

A

Pyramidal cells

Pyramidal cells serve as the principal excitatory neurons responsible for rapid signal transmission between brain regions and cortical processing in the cerebral cortex.

462
Q

Specialised Cells

Identify the cell - specialized neurons associated with social cognition and self-awareness

A

Von Economo neurons

Von Economo in 1925 did pioneering work on the cytoarchitectonics of the cerebral cortex and discovered a specialized and unique cell type in the fronto-insular and anterior cingulate cortex. These von Economo neurons (VENS) appear as large sticks, rods or corkscrew cells because of their extremely elongated and relatively thin cell body which is distinct from the more common oval or spindle-shaped infragranular neurons.

463
Q

Specialised Cells

Identify the cell - inhibitory interneurons that regulate neural activity in cortical circuits

A

Basket cells

Basket cells, specialised cells first described by Ramon y Cajal, are inhibitory interneurons in the neocortex, cerebellum and hippocampus; they form ‘baskets’ of axonal arborizations onto and around the somata of target neurons.

464
Q

Specialised Cells

Identify the cell - star-shaped glial cells involved in synaptic integration in the brain

A

Astrocytes

Astrocytes, characterized by their star-shaped morphology, play a multifunctional role in the brain, including synaptic integration, regulation of neurotransmitters, nutrient support for neurons and overall brain homeostasis.

465
Q

Neurons and Glial Cells

Identify the cell responsible for phagocytosis of cellular debris

A

Microglia

The microglia, which are derived from macrophages, are involved in removing cellular debris following neuronal death. The functions of microglia in the non-diseased brain probably include a role in synaptic maintenance.

466
Q

Neurons and Glial Cells

Identify the cell responsible for nutrition of neurons and release of glutamate

A

Astrocytes

There are three types of glial cells. The most common are the astrocytes, which have several functions, including nutrition of neurons, deactivation of some neurotransmitters, and integration with the blood-brain barrier. The astrocyte carries most of the extracellular glutamate.

467
Q

Neurons and Glial Cells

Identify the cell responsible for GABA-ergic projection in the striatum

A

Medium spiny neurons

GABA-ergic medium spiny neurons (MSNs), the principal neuron type in the striatum, are projection neurons with predominantly dopaminergic and glutamatergic inputs. The loss of MSNS in the striatum is the hallmark of Huntington disease.

468
Q

A child goes to daycare for the first time. He shows no reaction when he is left by his parents and no reaction when they come back. What type of attachment does this describe?

A

Anxious-avoidant

Mary Ainsworth devised the Strange Situation procedure with 12- to 18-month infants, which categorised infant-parent relationships. The procedure involves separations and reunions with caregivers and observes response. In insecure (anxious)-avoidant attachment, the child seems unconcerned at separation or reunion. It is associated with unresponsive parenting.

469
Q

Which of the following is not a strength of the nomothetic personality theory approach (which categorises specific and fixed domains to personality clusters)? Select one:
Personality seen in terms of attributes
Emphasis on individual variability
Reliability within cultures
Universalizability in assessment
Reliability over time

A

Emphasis on individual variability

There are two main approaches to conceptualise and describe variations in personality: nomothetic and ideographic. In nomothetic approaches, personality is seen in terms of attributes shared by individuals. There are two subdivisions: type (or categorical) approaches - in which there are discrete categories of personality - and trait (or dimensional) approaches - in which a limited number of qualities, or traits, account for personality variation. Unlike nomothetic approaches, ideographic approaches on the other hand, emphasise individuality and seek to understand an individual’s personality by understanding that specific individual and their development, rather than by reference to common factors. Examples include psychoanalytic, humanistic, and cognitive-behavioural approaches.

470
Q

Which of the following is true regarding the classical categorical classification of disorders?
Select one:
Disorders are overlapping and not distinct
Disorders appear in more than once in the system
It facilitates collection of epidemiological data
It must be hierarchy-based
It allows for varying levels of severity

A

It facilitates collection of epidemiological data

In classical categorical systems, each entity or disorder is distinct and appears only once in a clearly defined place. With a few exceptions, ICD and DSM are such classical categorical systems. WHO member states are responsible for reporting health statistics based on ICD to WHO (e.g. causes of morbidity and mortality, prevalence). ICD remains structured as a categorical taxonomic system because this format is necessary for its application as the classification system for global health statistics. Wide use of non-standard categories would not generate valid data for global health statistics.

471
Q

Which of the following is true of the Kaiser CDC Adverse Childhood Experiences Study?
Select one:
* Parental divorce was included as an adverse childhood experience
* Psychological abuse was not included in the original study
* The study utilised a questionnaire mailed to households in the UK
* Exposure to childhood abuse and household dysfunction showed no relationship to leading causes of adult deaths
* There was a significant relationship between the number of childhood abuse categories and depression as an adult

A

There was a significant relationship between the number of childhood abuse categories and depression as an adult

The CDC-Kaiser Permanente adverse childhood experiences (ACE) study is one of the largest studies of the long-term relationship of childhood experiences to important medical and public health problems. The ACE study questionnaire was mailed to over 13 000 adults in California, USA, with a 70% response rate. Seven categories of adverse childhood experiences were studied: psychological, physical, or sexual abuse; violence against mother; and living with household members who were substance abusers, mentally ill or suicidal, or ever imprisoned. Persons who had experienced four or more categories of childhood exposure, compared to those who had experienced none, had 4 to 12-fold increased health risks for alcoholism, drug abuse, depression, and suicide attempts. The study found a strong graded relationship between the breadth of exposure to abuse or household dysfunction during childhood and multiple risk factors for several of the leading causes of death in adults.

472
Q

In altruism research, which of the following is a replicated finding?
Select one:
* Altruism can reduce the physical perception of pain
* Altruism is present at birth
* Altruism is an exclusively human behaviour
* Performing altruistic behaviours does not improve well-being
* Empathy and altruism are identical

A

Altruism can reduce the physical perception of pain

Altruistic behaviours occur among many animals, including humans. It is well-documented that performing altruistic behaviours has a positive effect on psychological well-being and health. There is also evidence that performing altruistic behaviours relieves physical pain.

473
Q

Increased maternal sensitivity during attachment behaviour is due to increased functional connectivity of which structures?

A

Hippocampus and amygdala

Maternal sensitivity consists of the accurate interpretation followed by prompt and appropriate response to the infant’s signals. It is a well-documented predictor of attachment. The hippocampus and amygdala are key components of the limbic system that are centrally implicated in socio-emotional functioning. The amygdala plays a salient role in orienting to and processing emotionally significant information. The hippocampus is central to learning and memory. The hippocampus and amygdala are activated during interactions between infants and their caregivers.

474
Q

According to Piaget’s theory of development, what is the most important feature of the sensorimotor stage?

A

Object permanence

According to Piaget, the critical achievement of the sensorimotor stage is the development of object permanence or the schema of the permanent object. This relates to the child’s ability to understand that objects have an existence independent of their involvement. Infants learn to differentiate themselves from the world and maintain a mental image of an object, even when it is not visible.

475
Q

If a child wants to fit in socially and be described as a ‘nice person’, he is exhibiting which level of Kohlberg’s theory of morality?

A

Conventional

Lawrence Kohlberg integrated Jean Piaget’s concepts and described multiple stages of moral development within three significant levels of morality. The first level is pre-conventional morality, in which punishment and obedience are the determining factors. The second level is conventional morality, in which right and wrong are defined in terms of convention and ‘what people would say. Children try to conform to gain approval and maintain good relationships with others and are also guided by rigid codes of ‘law and order (authority orientation). The third and highest level is the morality of self-accepted moral principles (post-conventional), in which children voluntarily comply with rules based on a concept of universal ethical principles and make exceptions to rules in certain circumstances.

476
Q

What is defined as the ‘meaning of words’ in linguistics?

A

Lexical semantics

Lexical semantics is the study of word meaning. Phonology, orthography, syntax, and phenomenology are all relevant aspects of linguistics, but they deal with different aspects of language, such as sound patterns (phonology), written symbols (orthography), sentence structure (syntax), and subjective experiences (phenomenology), respectively. Lexical semantics specifically deals with the meaning of words themselves.

477
Q

What style of parenting is characterised by children following rules in response to their parents’ arbitrary use of hostile control or harsh punishment?

A

Authoritarian

The authoritarian parenting style is characterised as low in responsiveness but high in demandingness. Parents of this style tend to use hostile control or harsh punishment in an arbitrary way to gain compliance, but they seldom provide explanation or allow verbal give-and-take.

478
Q

In attachment theory (according to Bowlby), what is the sequence of the stages of separation anxiety?

A

Protest, despair, detachment

Underlying attachment theory were numerous observations of separations and reunions between young parents and children. The process has been described as occurring in phases; called protest, despair, and denial by Robertson; and protest, despair, and detachment by Bowlby. Bowlby, among others, preferred the term detachment because it was a natural counterpart to attachment. When separation anxiety is activated, the most prominent sign of the first phase - protest - is the child’s acute distress. If the parent fails to return for long, the behaviour will be replaced by expressions of the next phase - despair. If the separation continues, the despair is gradually replaced by detachment.

479
Q

According to Freud, when conflict is not worked through to a realistic solution, drives or wishes are expelled from consciousness through what?

A

Repression

The classic Freudian view of the genesis of neuroses regards conflict as essential. The conflict can arise between instinctual drives and external reality or internal agencies, such as the id and the superego or the id and the ego. Moreover, because the conflict has not been worked through to a realistic solution, the drives or wishes that seek discharge are expelled from consciousness through repression. Repression consists of the expelling and withholding from consciousness awareness of an idea or feeling.

480
Q

Which of the following is the best test for selective attention?
Select one:
* Story recall
* Rey-Osterrieth complex figure test
* Raven’s progressive matrices
* National adult reading test
* Stroop test

A

Stroop test

Stroop tests are based on the fact that it takes longer to call out the colour names of coloured patches than to read words, and even longer to name the colour of an ink in which a colour name is printed when the print ink is a colour different from the colour name. The latter phenomenon, a markedly slowed response when a colour name is printed in ink of a different colour, is interpreted as a failure of selective attention.

481
Q

According to ICD-11, how many episodes of depression are needed for a diagnosis of recurrent depressive disorder?

A

2

In ICD-11, recurrent depressive disorder is characterised by a history of at least two depressive episodes separated by at least several months without significant mood disturbance.

482
Q

In ICD-11, which of the following features is characteristic of children with reactive attachment disorder?
Select one:
* Cognitive deficits
* Social communication deficits
* Minimal seeking of comfort
* Fearfulness
* Hyperactivity and inattention

A

Minimal seeking of comfort

In ICD-11, reactive attachment disorder is characterised by grossly abnormal behaviours in early childhood, occurring in the context of a history of grossly inadequate child care. Even when an adequate primary caregiver is newly available, the child does not turn to the primary caregiver for comfort, support, and nurture, rarely displays security-seeking behaviours towards any adult, and does not respond when comfort is offered.

483
Q

According to ICD-11, which of the following may be seen in OCD but not in hoarding disorder?
Select one:
* Pleasure and enjoyment in hoarding
* Hoarding motivated by obsessional thoughts
* Accumulation of excessive amounts of objects
* Hoarded objects have an intrinsic value
* Compulsive hoarding

A

Hoarding motivated by obsessional thoughts

Individuals with OCD may accumulate excessive amounts of objects (i.e. compulsive hoarding). However, unlike hoarding disorder, the behaviour is undertaken with the goal of neutralising or reducing concomitant distress and anxiety arising from obsessional content such as aggressive, sexual/religious, contamination, or symmetry/ordering themes. Furthermore, even in individuals affected by OCD who have poor or absent insight, the behaviour is generally unwanted and distressing, whereas in hoarding disorder it may be associated with pleasure or enjoyment. Generally in hoarding disorder, items are hoarded because of their emotional significance, instrumental characteristics, or intrinsic value (e.g. perceived aesthetic qualities).

484
Q

In ICD-11, what is the minimum duration of grief response required for a diagnosis of prolonged grief disorder to be made?

A

> 6 months

Prolonged grief disorder is a disturbance in which, following the death of a person close to the bereaved, there is a persistent and pervasive grief response characterised by longing for the deceased or persistent preoccupation with the deceased accompanied by intense emotional pain. In ICD-11, the grief response must have persisted for an atypically long period of time following the loss (more than 6 months at a minimum).

485
Q

Which of the following is a specifier for a depressive episode in ICD-11?
Select one:
* With pseudodementia
* With biological symptoms
* With suicidality
* With grief
* With melancholia

A

With melancholia

In ICD-11, available specifiers for a depressive episode include: with prominent anxiety symptoms; with panic attacks; persistent; with melancholia; with seasonal pattern.

486
Q

As defined in ICD-11, which of the following best differentiates complex PTSD from PTSD?
Select one:
* Avoidance of memories of traumatic events
* Re-experiencing of traumatic events
* Dysphoria
* Persistent difficulties sustaining relationships
* A series of continued traumatic events

A

Persistent difficulties sustaining relationships

Whereas the ICD-11 diagnostic requirements for complex PTSD include all essential features of PTSD, the diagnosis of complex PTSD also requires the additional essential features of severe problems in affect regulation, persistent negative beliefs about oneself, and persistent difficulties in sustaining relationships.

487
Q

Which of the following is an interviewer-rated scale?
Select one:
* Geriatric Depression Scale
* HAM-D
* HADS
* General Health Questionnaire
* PHQ-9

A

HAM-D

The Hamilton Rating Scale for Depression (HAM-D) is an interviewer-rated, 17-item rating scale for depressive illness. It is not a diagnostic instrument, but is used to measure changes (e.g. as a result of drug treatment). 17 items are scored according to severity, producing the final score.

488
Q

What is an advantage of using a cross-sectional method to study developmental phenomena in children?
Select one:
* High response rates
* Ability to infer causality
* Avoids the confounding effect of age
* Quick data collection
* Longitudinal insights

A

Quick data collection

One advantage of using a cross-sectional method in studying developmental phenomena in children is that it allows for quick data collection from participants of different age groups at a single point in time. This method is efficient for obtaining a snapshot of developmental trends across different age cohorts, but it does not provide longitudinal insights into individual development or establish temporal causality. Attrition rates can vary, and the use of this design alone does not inherently improve response rates.

489
Q

Which of the following is a test of pre-morbid intelligence?
Select one:
* CANTAB Battery
* Autobiographical Memory Interview
* National Adult Reading Test
* Behavioural Inattention Test
* Boston Naming Test

A

National Adult Reading Test

Since the ability to pronounce irregular words correctly is highly educationally dependent, a test of irregular word reading, the National Adult Reading Test (NART), is widely used to predict premorbid intellectual disability.

490
Q

Which of the following is the most appropriate test for abstract reasoning?
Select one:
* Serial 7s test
* Digit span
* Trail-making test
* Proverb testing
* Cognitive estimates

A

Proverb testing

Abstract reasoning is the ability to shift back and forth between general concepts and specific examples. Having the patient identify similarities between like objects or concepts (apple and pear, bus and airplane, or a poem and a painting) as well as interpreting proverbs are useful ways to assess one’s ability to abstract.

491
Q

According to ICD-11, which of the following is seen in anorexia nervosa, but not in avoidant-restrictive food intake disorder?
Select one:
* Significantly low body weight
* Significant functional impairment
* Health-related consequences
* Restricted eating
* Weight loss to achieve thinness

A

Weight loss to achieve thinness

Individuals with anorexia nervosa (AN), like individuals with avoidant-restrictive food intake disorder (ARFID), present with a pattern of restricted eating and significantly low body weight, with similar health-related consequences. The difference is that in AN, behaviours to establish or maintain an abnormally low body weight are usually explicitly motivated by a desire for thinness or an intense fear of gaining weight. In ARFID, the pattern of eating behaviour is not motivated by preoccupation with body weight or shape.

492
Q

In ICD-11, disorders of Intellectual development are characterised by intellectual functioning and adaptive behaviour that are at least how many standard deviations below the mean?

A

2

In ICD-11, disorders of Intellectual development are characterised by intellectual functioning and adaptive behaviour that are approximately two or more standard deviations below the mean (approximately less than the 2.3rd percentile), based on appropriately normed, individually administered standardised tests.

493
Q

At what stage in Conrad’s model of the development of delusional psychosis does the individual start to find new meaning for psychological events?

A

Apophany

Conrad proposed five stages in the development of delusional psychosis:
1) Trema: delusional mood representing a total change in perception of the world
2) Apophany: a search for, and the finding of, new meaning for psychological events
3) Anastrophy: heightening of the psychosis
4) Consolidation: forming of a new world or psychological set based on new meanings
5) Residuum: eventual autistic state

494
Q

A patient with mania demonstrates the following speech: “Proctors, doctors. Doctors are in the hospital. Apples keep doctors away. Newton had an apple. Newton discovered gravity. Graves are in the ground. Ground, found.” What is this speech known as?

A

Flight of ideas

In flight of ideas, thoughts follow each other rapidly; there is no general direction of the thinking; and the connections between successive thoughts appear to be due to chance factors which, however, can usually be understood. The absence of a determining tendency to thinking allows the associations of the train of thought to be determined by chance relationships, verbal associations of all kinds, clang associations, proverbs, maxims, and cliches. The chance linkage of thoughts in flight of ideas is demonstrated by the fact that one could completely reverse the sequence of the record of a flight of ideas, and the progression of thought would be understood just as well (or just as poorly).

495
Q

A middle-aged man with OCD believes that his thoughts and actions can cause specific outcomes in ways that defy the normal laws of cause and effect. The most appropriate term for this defence mechanism is

A

Magical thinking

Magical thinking refers to a belief in personal power to control or cause external events in the real world beyond culturally and rationally accepted laws of causality. It is found when one attributes magical properties to thoughts or behaviours (e.g. ‘if I throw this piece of paper in the bin five times in a row, then I’ll pass my exams’). This defence is associated with OCD.

496
Q

Mild personality disorder in ICD-11 is equivalent to what level of personality functioning in DSM-5?

A

Moderate impairment

The threshold for a personality disorder diagnosis is at least Mild personality disorder (i.e., some impairment as per ICD-11) or Moderate impairment of personality functioning (DSM-5).

497
Q

In ICD-11, what can differentiate a manic episode from a hypomanic episode?

A

Psychotic symptoms

In ICD-11, a hypomanic episode is accompanied by characteristic symptoms such as rapid speech, rapid/racing thoughts, increased self-esteem, an increase in sexual drive or sociability, decreased need for sleep, distractibility, and/or impulsive or reckless behaviour. In a hypomanic episode, there are no accompanying delusions or hallucinations.

498
Q

In ICD-11, which of the following requires the longest duration of symptoms for diagnosis?
Select one:
* Adjustment disorder
* Schizoaffective disorder
* Schizotypal disorder
* Schizophrenia
* Delusional disorder

A

Schizotypal disorder

For ICD-11 diagnosis of schizotypal disorder, symptoms should have been present, continuously or episodically, for at least 2 years. Symptoms of schizoaffective disorder must have persisted for at least one month. ICD-11 notes that the duration of adjustment disorder varies widely; symptoms that resolve within a few days do not typically warrant a diagnosis of adjustment disorder, but ICD-11 does not designate a specific duration of symptoms. Symptoms must have persisted for at least one month in order for a diagnosis of schizophrenia to be assigned. In ICD-11, delusional disorder is characterised by the development of a delusion or set of related delusions, typically persisting for at least 3 months and often much longer.

499
Q

According to ICD-11, which of the following is most likely to differentiate intermittent explosive disorder from oppositional defiant disorder? Select one:
* Defiant behaviours
* Outbursts out of proportion to the provocation
* Vindictive behaviours
* Headstrong behaviours
* Significant physical aggression

A

Significant physical aggression

According to ICD-11, individuals with intermittent explosive disorder (IED) are more likely to exhibit significant physical aggression than those with oppositional defiant disorder (ODD). Severe temper outbursts that are grossly out of proportion to the provocation are core to IED, but also occur in the context of ODD with chronic irritability- anger. Individuals with ODD with chronic irritability-anger typically display other features of ODD - including defiant, headstrong, or vindictive behaviours - which are not characteristic of IED.

500
Q

A woman sees colours when she hears her husband’s voice or laughter. This is known as what?

A

Synaesthesia

Synaesthesia is the experience of a stimulus in one sense modality producing a sensory experience in another (e.g. ‘tasting’ sounds or ‘hearing’ colours).

501
Q

Which of the following is true about stupor?
Select one:
* The patient appears awake and alert
* The patient is able to move
* It exists on a spectrum of wakefulness to coma
* Consciousness is severely impaired
* It is the same as coma

A

The patient appears awake and alert

Note that in neurology the term stupor is used to refer to any state of reduced consciousness. In psychiatry, stupor is the absence of movement and communicative behaviour (akinesia + mutism) where there is no impairment of consciousness. It can be regarded as an extreme form of hypokinesia. Functional stupor occurs in a variety of psychiatric illnesses wherein patients are mute and paralyzed but generally appear alert with preserved intellectual function.

502
Q

Which of the following is true regarding alcohol use by young people in the UK?
Select one:
* Those who drink alcohol regularly from an early age are more likely to develop later alcohol misuse/abuse
* Young people in the UK aged 15-17 years are unlikely to binge drink
* Alcohol seldom has negative impacts on young people’s educational performance
* Binge drinking in young people has no association with self-harm and thoughts of suicide
* The Health Behaviour in School-Aged Children Survey (HSBC) provides data on cannabis, but not alcohol

A

Those who drink alcohol regularly from an early age are more likely to develop later alcohol misuse/abuse

Young people between the ages of 15 and 17 years are more likely to binge drink, which is associated with other health risk behaviours such as unprotected or regretted sexual activity; antisocial and criminal behaviour; and self-harm and thoughts of suicide. Those who drink regularly from an early age are more likely to develop later alcohol misuse or abuse. Alcohol use can negatively impact upon young people’s educational performance, their friendships, their relationships with their parents, and the dynamics of their peer group. The Health Behaviour in School-Aged Children Survey (HBSC), as used in the UK, provides information on alcohol and substance use, including cannabis.

503
Q

Which of the following is a first rank symptom?
Select one:
* Upon hearing a clock strike 12, a man believes that he is the Messiah
* A man believes that his neighbours are poisoning him
* After his wife dies, a man briefly thinks that he sees her in the shadows
* A man hears voices commanding him to hurt other people
* A man feels unsettled and believes that something is about to happen

A

Upon hearing a clock strike 12, a man believes that he is the Messiah

A delusional perception is a primary delusion of any content that is reported by the patient as having arisen following the experience of a normal perception. If the patient is asked to recall the point when they became aware of the delusion and its significance to them, they will report that the delusional perception arose on seeing a normal percept (the percept is a real external object, not a hallucinatory experience). Delusional perception is a first-rank symptom of schizophrenia.

504
Q

Which of the following is the most appropriate test for short-term memory?
Select one:
* Finger tapping
* Digit span
* Clock-drawing
* Facial recognition
* Verbal fluency

A

Digit span

Working memory is synonymous is synonymous with short-term memory, which is responsible for the immediate recall of small amounts of verbal (as in digit span) or visuospatial information.

505
Q

What is the pathophysiologic mechanism of Wernicke-Korsakoff syndrome?

A

Mamillary body alpha-keto glutamate dysfunction

Wernicke encephalopathy (WE) and Korsakoff psychosis, together termed Wernicke-Korsakoff syndrome, are distinct yet overlapping neuropsychiatric disorders associated with thiamine deficiency. Deficiency of thiamine can lead to decreased functioning of enzymes involved in the tricarboxylic acid cycle (alpha-keto glutamate dehydrogenase and pyruvate dehydrogenase), pentose phosphate pathway, and branched-chain amino acid metabolism. Mammillary body lesions are the classic autopsy sign in WE patients and are present in almost all cases.

506
Q

It is understood that the consolidation of emotional memories occurs in which stage of sleep?

A

REM

Evidence for the role of REM sleep in consolidation of the emotional components of memory is relatively strong. The precise mechanisms by which REM sleep promotes consolidation of emotional memories remains unresolved, although there are some studies suggesting that long-term potentiation processes are activated in REM sleep. There is a large body of literature suggesting that theta oscillations, characteristic of REM sleep, play a role in memory consolidation, particularly in fear conditioning and emotional memories.

507
Q

What is the pathophysiologic mechanism of multisystem atrophy?

A

Alpha-synucleinopathy

Multisystem atrophy (MSA), a family of Parkinson-plus diseases, includes a cerebellar type (formerly olivopontocerebellar degeneration) that is notable for ataxia and a subtype with pronounced autonomic dysfunction (formerly Shy-Drager syndrome). There is a common neuropathological finding of distinctive inclusion bodies in glial cells which contain alpha-synuclein, leading to the classification of MSA as a synucleinopathy. No mutations in the gene for alpha-synuclein have been found in MSA, which appears to exist only as a sporadic disorder.

508
Q

Which of the following is an important component of the blood brain barrier (BBB)?
Select one:
* APP
* Huntingtin
* Hypocretin
* ApoE
* Prion protein

A

APP

Cerebrovascular homeostasis is maintained by the blood-brain barrier (BBB), a highly selective structure that separates the peripheral blood circulation from the brain and protects the central nervous system. Several recent studies have highlighted the importance of the physiological role of the beta-amyloid precursor protein (APP) in endothelial cell homeostasis, suggesting an important role of this protein in maintaining vascular stability.

509
Q

Brain organoids can mimic which age of the human brain?

A

2nd trimester

Brain organoids are produced by the differentiation of pluripotent stem cells under three-dimensional culture conditions by adding neurodevelopment- related regulatory signals. They are similar to the cell composition and anatomical structure of the brain, and can reflect the developmental process of the bring, as well as their physiology, pathology, and pharmacology. In terms of their cellular and molecular composition, the current architecture of brain organoids can mimic the second- trimester human fetal brain.

510
Q

Dysfunction in which neurotransmitter is likely to contribute the most to cognitive symptoms in schizophrenia?

A

Dopamine

Although dopamine dysfunction has mainly been linked to positive psychotic symptoms, striatal dopamine signalling normally has widespread effects on cortical function, and its dysregulation can also cause cognitive symptoms. Many researchers believe that cognitive and some negative symptoms of schizophrenia may be due to a deficit of dopamine activity in mesocortical projections to the dorsolateral prefrontal cortex.

511
Q

The processing of empathy is most influenced by which of the following structures?
Select one:
* Hypothalamus
* Cerebellum
* Insula
* DLPFC
* Amygdala

A

Insula

The anterior insula cortex has been shown to be a core circuit for empathy.

512
Q

Which of the following is recommended for the treatment of REM sleep behaviour disorder?
Select one:
* Amitriptyline
* Deep brain stimulation
* Melatonin
* Prazosin
* Trazodone

A

Melatonin

Recommended treatments for REM sleep behaviour disorder include clonazepam, melatonin, and pramipexole. Melatonin binds to the M1 and M2 receptors, suppressing REM sleep motor tone and renormalising other circadian features of REM sleep. Melatonin requires a prescription in the EU and the UK.

513
Q

Loss of orexin-producing neurons takes place in which condition?

A

Narcolepsy

Orexin/hypocretin neurons are localised exclusively in certain hypothalamic areas (later hypothalamic area, perifornical area, and posterior hypothalamus). These hypothalamic neurons degenerate in narcolepsy, and loss of these neurons causes the inability of orexin to be produced and released downstream on wake-promoting neurotransmitter centres and thus lack of stabilising wakefulness.

514
Q

In Bayesian theory, what is the term given to an expected result or belief?

A

Priors

The account of predictive processing has emerged as an alluring computational model to explain how brain processes information about the world. In the higher brain centers, expected predictions and pre-existing beliefs (known as priors) are said to be combined with observed sensory data (referred to as likelihood) to compute a posterior probability (referred to as the posterior). This posterior probability is said to represent the most probable perception, considering both the prior beliefs and the sensory evidence. In cases where there is a disparity between the prior expectations and the sensory evidence (likelihood), a prediction error is generated. This error signal initiates the necessity to revise the brain’s current model and adjust its prior beliefs accordingly. To express it formally, a prediction error quantifies the difference between the means of the prior and likelihood distributions, taking into account their respective precisions (inverse variance).

515
Q

Which of the following protein inclusion profiles is most common in FTD?
Select one:
* Tau positive, amyloid positive
* Synuclein positive, tau positive
* Ubiquitin negative, tau negative
* Ubiquitin positive, tau positive
* Tau positive, amyloid negative

A

Tau positive, amyloid negative

The classification of frontotemporal dementias is based on the type of protein inclusions observed in neurons as well as the mutational status, if known. The inclusions contain predominantly or exclusively one of three markers: tau; TDP-43, a DNA/RNA-binding protein; and FUS (fused in sarcoma). Atypical frontotemporal lobar degeneration with ubiquitin-positive inclusion is a relatively rare cause of FTD characterised by FUS-positive inclusions.

516
Q

How many times does a G protein coupled receptor pass through the cell membrane?

A

7 times

Receptors linked to G proteins all have the structure of seven-transmembrane regions, meaning that they span the membrane seven times.

517
Q

Which of the following statements best describes the concept of group polarisation?
Select one:
* The tendency of a group to select individuals to blame for adverse outcomes
* The tendency for a group to engage in irrational decision-making to preserve harmony
* The tendency for a group to make a more extreme decision than its individual members would have done initially
* Individuals losing self-awareness while in a group setting
* The tendency of a group to favour its own members over others

A

The tendency for a group to make a more extreme decision than its individual members would have done initially

Group polarisation is defined within social psychology as the tendency for groups to move towards a more extreme version of their initial beliefs following group discussion, e.g. being more risky if they were originally inclined to be, and more cautious if this was their initial inclination.

518
Q

A young child appears frozen after hearing a loud noise but does not come close when offered comfort. What is the most likely diagnosis?

A

Reactive attachment disorder

In ICD-11, reactive attachment disorder is characterised by grossly abnormal behaviours in early childhood, occurring in the context of a history of grossly inadequate child care. Even when an adequate primary caregiver is newly available, the child does not turn to the primary caregiver for comfort, support, and nurture, rarely displays security-seeking behaviours towards any adult, and does not respond when comfort is offered.

519
Q

When public health campaigns aim to influence behaviour by detailing the harms of smoking and the benefits of not smoking, this is best attributed to which type of power, according to classic work of French & Raven?

A

Informational

According to French & Raven, informational power stems from the logical or persuasive content of the communication between the influencing agent and the target. Informational power is used when campaigns explain the reasons for recommended behaviours, indicating how such behaviours would contribute to improved heath.

520
Q

The unintentional distortion of memory that occurs when it is filtered through a person’s current emotional, experiential, and cognitive state is best referred to as

A

Retrospective falsification

Retrospective falsification refers to the unintentional distortion of memory that occurs when it is filtered through a person’s current emotional, experiential, and cognitive state. It is often found in those with depressive illness who describe all past experiences in negative terms due to the impact of their current mood. Any psychiatric illness can lead to retrospective falsification, which is related to insight of the patient as well as to suggestibility.

521
Q

What Gestalt principle of perception is shown in this figure?

OOOOO OO OO OO
OOOOO OO OO OO
OOOOO OO OO OO
OOOOO OO OO OO

A

Proximity

Proximity is one of the four original grouping laws of Gestalt psychology that explain the organisation of parts into whole by the visual system. According to the law, elements close together tend to be grouped perceptually, so that the array 00 00 00 00 tends to be perceived as four pairs rather than eight separate elements.

522
Q

Hypoplasia of which of the following structures has been associated with autism spectrum disorder?

A

Cerebellum

Cerebellar hypoplasia was an early documented change in brain morphology in ASD (autism spectrum disorder). The finding of cerebellar hypoplasia in ASD has been replicated and has been associated with the loss of cerebellar Purkinje cells in the posterior lobe whose degenerated myelinated axons contribute to reduced cerebellar volume.

523
Q

When a child is obedient to rules and there is parental responsiveness without rigidity, what is the most likely style of parenting?

A

Authoritative

The authoritative parenting style is characterised as high in responsiveness and demandingness. Authoritative parents provide not only support and warmth, but also clearly defined rules and consistent discipline.

524
Q

The cocktail party phenomenon involves

A

Selective auditory attention

The cocktail party phenomenon involves selective attention in speech perception that enables a listener to attend to one among several equally loud conversations occurring simultaneously, factors such as voice quality and directional cues facilitating the task. Recordings of conversations under similar circumstance are very much harder to understand. The term was introduced in 1957 by the British telecommunications engineer Colin Cherry.

525
Q

What is the name given to the phenomenon in which individuals are reluctant to help in an emergency when there are many people present?

A

Bystander effect

The ‘bystander effect’ (also known as the ‘Genovese syndrome’) is the reluctance of bystanders to intervene in an emergency, especially when a person appears to be in distress, or a crime is being committed. Scores of experiments have shown that people are much less likely to intervene in an emergency, and are generally slower to respond, when other people are present than when they are alone, and this phenomenon is sometimes called ‘group inhibition of helping’ or ‘bystander apathy effect’.

526
Q

Which of the following is true of bereavement and grief in children?
Select one:
* Grief in children closely resembles that in adults
* 1% of school-aged children/young people in the UK experience family bereavement
* Grief reactions are influenced by developmental levels and concepts of death
* Grief in children is an illness
* A child’s grief usually resolves completely within 3 months following bereavement

A

Grief reactions are influenced by developmental levels and concepts of death

Grief reactions in children are influenced by developmental levels and concepts of death and may not resemble adult reactions. Family bereavement has continuous, cumulative effects on children’s emotional and social well-being, long after bereavement happens. Grief is not an illness, but it does increase the risk of mental health difficulties, both in childhood and later life. Around 1/3 of bereaved children reach clinical levels of emotional/behavioural difficulties in the two years following a parent’s death. Around 1 in 29 school-age children and young people (5-16) in the UK are bereaved at some point in their childhood of a parent or sibling.

527
Q

Sherif and colleagues’ (1954) field experiment observing group behaviours that involved two groups of eleven-year-old boys was focused on what?

A

Group conflict and cooperation

Realistic group conflict theory is the notion that group conflict and hostility are caused chiefly by competition for resources and power, as proposed by psychologist Muzafer Sherif and several colleagues in the Robbers Cave experiment. The field experiment involved two groups of white, middle-class eleven-year-old boys, and was named after the Robbers Cave State Park where the experiment took place.

528
Q

A police officer comes to the scene of a crime, sees a well-dressed man, and decides he cannot be the culprit. What is the name given to this phenomenon?

A

Halo effect

The halo effect is a generalisation from the perception of one prominent or salient characteristic, trait, or personality attribute to an impression of the whole, leading to inflated correlations between rated items.

529
Q

Healthcare workers wash their hands more often following the implementation of a new protocol which involves the workers being observed. What explains their improvement in hand washing?

A

Hawthorne effect

The Hawthorne effect refers to improvement in the performance or productivity of workers or students resulting from the introduction of new working methods or conditions, irrespective of the nature of the changes, the effect often being attributed to the feeling of being under concerned observation.

530
Q

Which of the following is true of the concept of ‘storm and stress’ in adolescence?
Select one:
* Negative behaviours in adolescence are normative
* Parent-adolescent relationships are unaffected by this phenomenon
* Percentages of adolescents displaying specific negative behaviours are specified
* Adolescents exhibit less negative externalising behaviours than children
* Positive behaviours are more common than negative behaviours in adolescence

A

Negative behaviours in adolescence are normative

A primary aspect of the ‘storm and stress’ characterisation of adolescence is that adolescents exhibit more negative, or undesirable, characteristics in the domains of externalising, internalising, and parent-adolescent relationships than do younger and older individuals. The original characterisation by Hall (in 1904) who spoke of behaviour such as ‘cruelty, laziness, lying, and thievery’ as normative, is now seen as inaccurate and does not specify percentages of adolescents who are expected to display specific negative behaviours. Nevertheless, this characterisation has influenced the public opinion and is often referred to in the context of risk behaviour, mood disruption, and parent-child conflicts.

531
Q

According to Bandura’s classic experiments, which of the following is true about effectively reducing aggressive behaviour in children?
Select one:
* Observing an adult aggressor receive punishment reduces the probability of aggressive behaviour in children
* Not reinforcing an adult’s aggressive behaviour leads to decreased aggression in children
* Children who watch a film showing aggressive cartoons tend not to imitate this behaviour
* Positive reinforcement of an adult’s aggressive behaviour has no effect on aggression in children
* Putting children into a new, different context eliminates the possibility of aggressive behaviour

A

Observing an adult aggressor receive punishment reduces the probability of aggressive behaviour in children

Key findings of Bandura’s experiments on aggressive in children include the following: 1) Observation of an aggressive model is sufficient to elicit aggressive behaviour in the young child. 2) If the adult model is punished for their aggressive behaviour, the probability that the child will show aggressive behaviour is reduced. 3) Positive reinforcement or no reinforcement of the adult model’s aggression leads to increased aggression on the part of the child (vicarious/indirect learning). 4) Children who watch a film showing aggressive people or cartoons tend to imitate this behaviour. 5) Children transfer, by means of generalisation, aggression into new, different contexts, even when the aggressive model is no longer present (delayed imitation).

532
Q

Which of the following reflects the constructivist theory of perception?
Select one:
* Affordance is what the object offers the viewer in terms of potential action
* Perception does not require knowledge-based processes
* Depth and form are obtained directly from a visual image
* Perception involves making inferences about past experiences
* Gestalts include proximity features

A

Perception involves making inferences about past experiences

Richard Gregory was a pioneer of cognitive psychology whose scientific work involved the development and interpretation of visual illusions, which he used as a tool to work out the perceptual mechanisms involved in the way that the visual world is normally perceived. Gregory’s account of perception requires not only information from the retina but also knowledge-based processes required for top-down or indirect construction of perception: past experience, assumptions, and active processing. An alternative approach was advocated by the psychologist James Gibson who argued that depth and form are obtained directly from the visual image. Gibson also argued that an object’s affordance is what it can offer the viewer in terms of potential action.

533
Q

Sherif and Hovland’s assimilation-contrast theory involves which of the following?
Select one:
Aerial perspective
Individual assertiveness
Attachment theory
Group norms
Persuasive communication

A

Persuasive communication

Assimilation-contrast theory is a theory of judgement and attitude change. A consequence of this theory is that an extreme and ego-involving judgement or attitude tends to be polarised (to become even more extreme) in response to most types of information or persuasive communication.

534
Q

Reciprocal inhibition is central to which of the following psychotherapeutic techniques?
Select one:
* Implosion
* Floodling
* Mindfulness
* Exposure and response prevention
* Systematic desensitisation

A

Systematic desensitisation

Systematic desensitisation (Wolpe) is frequently used in the treatment of phobic anxiety disorders. It is based on the behavioural principle of reciprocal inhibition (i.e. anxiety and relaxation cannot coexist).

535
Q

What is true about prelinguistic communication?
Select one:
* It includes eye gaze, but not gestures
* It is not used in adolescence or adulthood
* Skills learned in this period are lost over later life
* It has no bearing on communication as an adult
* This period is extended in children with autism spectrum disorder

A

This period is extended in children with autism spectrum disorder

The prelinguistic stage is viewed as the period between birth and when an individual begins to use words/signs meaningfully. It is a time when children typically increase their ability to communicate with others, first using eye gaze, attending, and social-emotional affect and later adding gestures and other nonverbal means to communicate. Individuals with significant intellectual disability, including autism spectrum disorder, can have substantially protracted prelinguistic periods of communication and language development. For some, a singular reliance on prelinguistic communication may continue into adolescence or adulthood. The skills typically learned during this stage are critical to effective communication throughout the lifespan.

536
Q

Fundamental attribution error refers to

A

Attributing personal factors for others’ behaviours

Fundamental attribution error is a pervasive tendency to underestimate the importance of external situational pressures and to overestimate the importance of internal motives and dispositions in interpreting the behaviour of others.

537
Q

According to Allport, the denial of opportunity to the minority group due to the majority group practicing their prejudice is termed as

A

Discrimination

Allport identified the following processes operating during conflicts between the minority and the majority: 1. Antilocution 2. Avoidance 3. Discrimination: Minority group is discriminated against by denying them opportunity and equality. 4. Physical attack 5. Extermination.

538
Q

Purines
Select one:
* Are nitrogen-containing compounds
* Include cytosine and thymine
* Are found only in eukaryotes
* Can only be obtained from the diet
* Include ethanol and nicotine

A

Are nitrogen-containing compounds

A purine is an aromatic heterocycle composed of carbon and nitrogen. Eukaryotes, bacteria, and archaea are all able to carry out de-novo biosynthesis of purines. Purines include adenine and guanine, which participate in DNA and RNA formation. Purines are also constituents of other important biomolecules, such as ATP, GTP, cyclic AMP, NADH, and coenzyme A. Other important purines include hypoxanthine, xanthine, theobromine, caffeine, uric acid, and isoguanine. Cytosine, thymine, and uracil are pyrimidines.

539
Q

Which candidate genes form the most biologically plausible genetic basis of schizophrenia?

A

DISC1 and NRG1

DISC1 is one of the most important candidate genes for schizophrenia. It is one of the most researched genes in schizophrenia, alongside the COMT AND NRG1 genes. DISC1 is a protein that performs many functions, including neuronal migration, intracellular transport, synaptic maintenance, and stabilisation. NRG1 is one of the most important proteins for the variety of functions in which it is involved. Among them are the growth and development of the epidermis and development of the nervous system (synaptic plasticity).

540
Q

Which of the following neurotransmitters has been shown to be sensitive to epigenetic tuning in the context of maternal attachment?
Select one:
* Dopamine
* Glutamate
* Norepinephrine
* Oxytocin
* Serotonin

A

Oxytocin

Oxytocin is a crucial regulator of human social behaviour. Individual differences within the oxytocin system - assessed through hormonal levels, epigenetic modification, or genetic variation - have been linked to differential sensitivity to social cues, prosocial behaviours, and stress responsiveness in adults. Early experience in maternal care predicts epigenetic change within the infant oxytocin system, levels of which are in turn reflective of infant temperament.

541
Q

A non-dominant cerebral hemisphere lesion is most likely to lead to which of the following?
Select one:
* Finger agnosia
* Constructional apraxia (Gestalt)
* Constructional apraxia (details)
* Right-left disorientation
* Limb apraxia

A

Constructional apraxia (Gestalt)

Symptoms arising from non-dominant hemisphere injury tend to be subtle, and predominantly neuropsychologic. The cause is usually a structural lesion, such as trauma, stroke, or malignant tumour, that has rapidly developed in the non-dominant parietal or frontal lobe cortex. Neuropsychological deficits include constructional apraxia (Gestalt), dressing apraxia, and anosognosia.

542
Q

Which of the following is part of the default mode network?
Select one:
* Globus pallidus
* Inferior parietal lobe
* Occipital lobe
* Nucleus accumbens
* Caudate nucleus

A

Inferior parietal lobe

The default mode network is an integrated system of cortical areas that are active in a person who is in a state of wakeful rest, daydreaming, reminiscing, or contemplating future events, but not focused on a specific task involving the sensory (especially visual) input. It includes the medial prefrontal cortex, the posterior cingulate gyrus, and angular gyrus, and the medial, lateral, and inferior parietal lobe (IPL), and parts of the parahippocampal gyrus.

543
Q

Which recombination fraction value denotes that two genes are likely to be independently assorted?

A

0.5

The evidence for linkage between two loci depends on the recombination frequency between them. Recombination frequency is measured by the recombination fraction, equal to the genetic distance between the two loci. 1% recombination equals 1 centimorgan (cM) in the genetic distance and, on average, covers a physical distance of about 1 megabase of DNA. Genes are said to independently assort, when they are apart at a distance of 50 cM or more. Thus, a recombination fraction of 0.5 or 50% indicates that two loci are not linked but rather that they are segregating independently.

544
Q

Deep brain stimulation in OCD targets which structure?

A

Anterior limb of internal capsule

Deep brain stimulation is best regarded as an experimental treatment for OCD and depression. DBS involves implantation of bilateral electrodes under stereotactic guidance and MRI confirmation. Targets for DBS in OCD include the anterior limb of the internal capsule and, for depression, the subgenual cingulate gyrus.

545
Q

Which ion channel is most implicated in schizophrenia?

A

Calcium

Genetic association studies of schizophrenia have consistently demonstrated a convergence of genetic risk upon sets of genes with synaptic functions, including discrete signal transduction pathways such as voltage-gated calcium channel complexes and glutamate receptor complexes. The relationship between the expression of genes involved in voltage-gated cation channel activity and association with schizophrenia has been shown to be strongest for the subset of genes related to calcium channel activity.

546
Q

Southern blots are used to identify which of the following?
Select one:
* Post translational modification
* DNA fragment sequence
* DNA binding protein
* Protein sequence
* RNA sequence

A

DNA fragment sequence

Developed by and named after Edward Southern, a Southern blot is used to identify if a known DNA sequence is present in a sample by using a specific probe to identify the sequence in a large mixture of other DNA fragments. Southern blots were traditionally used to validate the successful introduction or removal of DNA sequences in the genome of genetically modified animals. Now, modern PCR techniques are more sensitive and a faster alternative to identifying a DNA fragment.

547
Q

Adverse Lyonization is seen in which condition?

A

Fragile X syndrome

Fragile X syndrome (FXS)-affected individuals display a spectrum of neurologic, psychiatric and developmental issues which often manifest with less severity in full-mutation (FM) females as a result of X-chromosome inactivation or skewed or adverse Lyonization. Random inactivation (or Lyonisation) of either the paternal or the maternal X chromosomes occurs in each cell in female embryos, resulting in a mosaic expression of X-linked genes in females with 50:50 expression of maternal and paternal alleles. However, in the presence of a structural abnormality such as fragile X chromosome, a deviation from the 50:50 ratio, known as skewed or adverse Lyonization, may occur wherein the inactivation of the unaffected X chromosome is favored. This leads to the clinical expression of FXS in some women (30-50% of the Fragile X chromosome carriers). In general, the X-chromosome inactivation ratio is considered skewed if it is ≥65:35.

548
Q

The dentate gyrus is a part of which structure?

A

Hippocampus

The dentate gyrus is a subregion of the hippocampus. Encoding spatial information as well as pattern separation are seen as its major functions, among many other roles relevant to human memory.

549
Q

Which of the following inflammatory biomarkers is commonly elevated in depression?
Select one:
* IL-13
* IL-4
* IL-22
* IL-6
* IL-11

A

IL-6

Biomarkers of inflammation in patients with depression include elevated blood levels of IL-1 beta, IL-6, TNF, and CRP. Of these, prospective associations of depression and inflammatory biomarkers are observed in both directions, particularly for IL-6.

550
Q

The locus coeruleus is involved in which of the following pathways?
Select one:
* Serotonergic
* Dopaminergic
* Noradrenergic
* Cholinergic
* GABA-ergic

A

Noradrenergic

CNS norepinephrine (noradrenaline) synthesis takes place primarily in the locus coeruleus, which is located in the dorsal portion of the pons. While the locus coeruleus gives rise to norepinephrine tracts, the raphe nucleus gives rise to serotonin tracts.

551
Q

Fluorodeoxyglucose (FDG) is used in which neuroimaging technique?

A

PET

PET relies on positron-emitting, biologically active radioisotopes (radioligands) incorporated into organic molecules. The radioligands, inhaled or injected intravenously, undergo metabolism in the brain and emit positrons. The reaction between positrons and electrons yields photons that PET detects and transforms into images. Most PET studies measure the metabolism of a substitute for glucose, fluorine-18-labeled fluorodeoxyglucose (FDG).

552
Q

In vivo measurement of neuroreceptors is possible by which technique?

A

PET

Dynamic positron emission tomography (PET) with appropriate neuroreceptor ligands permits the measurement of neurotransmitter release in the human brain with appropriate pharmacological or behavioural challenge. This imaging technique has been used for more than two decades to probe the neurochemical underpinnings of cognitive and motivational functions in normal and neuropathological conditions. PET is the only technology to date that has the capability to reveal the metabolism of molecules, receptors, and neurotransmitters in vivo with the appropriate radioligands and precursor.

553
Q

Ebstein anomaly is most associated with which drug?

A

Lithium

Lithium use during pregnancy has a well-known association with the cardiac malformation, Ebstein anomaly. Of note, however, is that more recent data suggest that the magnitude of the effect is much smaller than previously estimated.

554
Q

Metabolic syndrome was present in what percentage of patients in the CATIE trial?

A

41-43%

In the CATIE trial, metabolic syndrome prevalence was 41% and 43%, respectively, using the National Cholesterol Education Program (NCEP) and AHA (fasting glucose threshold of 100mg/dl) derived criteria.

555
Q

Hallucinogenic effects of psychedelics are produced by activity on which receptor?

A

5HT2

Hallucinogens such as LSD, psilocybin, and mescaline are 5HT2A agonists. When these agents stimulate 5HT2A receptors on glutamatergic pyramidal neurons in the prefrontal cortex, this causes overactivation of the glutamate neuron. The resultant release of glutamate into the ventral tegmental area causes hyperactivity of the mesolimbic dopamine pathway, resulting in delusions and auditory hallucinations. Excessive glutamate release in the visual cortex can cause visual hallucinations.

556
Q

Which of the following drugs has the narrowest therapeutic index?
Select one:
* Carbamazepine
* Doxepin
* Clomethiazole
* Zopiclone
* Clonazepam

A

Carbamazepine

Some drugs have a narrow therapeutic index (a small increase in dose can cause toxicity and a small reduction in dose can cause a loss of therapeutic action). The most commonly prescribed ones are digoxin, warfarin, theophylline, phenytoin, carbamazepine, and lithium.

557
Q

Which of the following is the most biologically important metabolite?
Select one:
* Lorazepam
* Alprazolam
* Chlordiazepoxide
* Oxazepam
* Diazepam

A

Oxazepam

Oxazepam is a short-acting benzodiazepine and one of the most frequently prescribed anxiolytic drugs. It is also the active metabolite of a wide range of other benzodiazepines, such as diazepam, ketazolam, temazepam, and chlordiazepoxide.

558
Q

Which of the following best describes the primary mechanisms of action of lurasidone?
Select one:
* Antagonist at D2, 5HT2A, and 5HT7
* Antagonist at D2; agonist at 5HT2A and 5HT7
* Agonist at D2; antagonist at 5HT2A and 5HT7
* Agonist at D2, 5HT2A, and 5HT7
* Antagonist at H1 and M1

A

Antagonist at D2, 5HT2A, and 5HT7

Lurasidone is a 5HT2A/D2 antagonist. It also potently blocks 5HT7 receptors, which may be beneficial for mood, sleep, cognitive impairment, and negative symptoms in schizophrenia, and also in bipolar disorder and major depressive disorder. Lurasidone lacks potent actions at D1, M1, and H1 receptors, theoretically suggesting less propensity for inducing cognitive impairment, weight gain, or sedation compared to other agents with these properties.

559
Q

Extrapyramidal symptoms (EPS) are produced at what percentage of D2 occupancy?

A

0.8

The incidence of EPS is significantly correlated with the D2 receptor occupancy in the substantia nigra and striatum areas. Approximately 75-80% blockade of D2 receptors by antipsychotics can lead to the induction of EPS. Notably, this does not apply to D2 partial agonists as they show high D2R occupancies but still lower odds of EPS.

560
Q

Which of the following is not seen in serotonin syndrome?
Select one:
* Tremors
* Nausea
* Diplopia
* Shivering
* Mydriasis

A

Diplopia

Serotonin syndrome is characterised by altered mental state, agitation, tremors, shivering, diarrhoea, hyperreflexia, myoclonus, ataxia, and hyperthermia. Autonomic signs and symptoms include hyperthermia (that may be secondary to prolonged seizure activity, rigidity, or muscular hyperactivity), Gl upset (including nausea and diarrhoea), mydriasis, tachycardia, and hyper/hypo-tension.

561
Q

Metabotropic receptors are

A

G protein coupled

Metabotropic receptors are linked to G proteins. Metabotropic receptors get their name from the fact that the movement of ions through them depends on certain metabolic processes. While they do not have ion channels included in their own structure (they are monomeric proteins with an extracellular neurotransmitter binding domain), the activation of intermediate molecules called G-proteins (an intracellular domain) enable eventual ion movement.

562
Q

Which of the following medications works by acetylcholinesterase inhibition?
Select one:
* Galantamine
* Pimavanserin
* Brexpiprazole
* Memantine
* Bupropion

A

Galantamine

Galantamine is an inhibitor of the enzyme acetylcholinesterase (AChE). Central cholinergic neurons are important for regulation of memory, and thus, in the central nervous system, the boost of acetylcholine caused by AChE blockade contributes to improved cognitive functioning.

563
Q

Which of the following physiologic/pharmacokinetic changes is seen in pregnancy?
Select one:
* Increased glomerular filtration rate (GFR)
* Increased binding of drugs to albumin
* Decreased volume of distribution of water-soluble drugs
* Decreased cardiac output
* Decreased renal blood flow

A

Increased glomerular filtration rate (GFR)

Increased cardiac output of pregnancy is accompanied by an increase in renal blood flow, which, in conjunction with haemodilution and a reduction in oncotic pressure from reduced plasma proteins, increases the GFR. Albumin concentrations are 70-80% lower compared to non-pregnancy. Consequently, drugs that are highly protein bound will typically have greater free fractions in pregnancy. Fluid volume increases in pregnancy. Depending on a number of factors, the volume of distribution for hydrophilic medications may be as large as the volume of total body water. In pregnancy, the increase in total body water (and thus volume of distribution) leads to reduced plasma and tissue concentrations for the same initial dose compared to the nonpregnant state.

564
Q

What is the primary mechanism of action of memantine?

A

Non-competitive NMDA antagonism

Memantine is a non-competitive, low-affinity NMDA receptor antagonist. It also has weak 5HT-3 antagonist properties.

565
Q

Where are the muscarinic receptors of the peripheral nervous system mainly found?

A

Parasympathetic ganglia

Muscarinic acetylcholine receptors are G-protein coupled metabotropic receptors. Various subtypes are distributed predominantly in the CNS. Iin the peripheral nervous system, they are found primarily on autonomic effector cells innervated by postganglionic parasympathetic nerves.

566
Q

What is the purpose of naloxone being mixed with buprenorphine in the treatment of opioid dependence?

A

Reduces the risk of misuse/diversion

A buprenorphine/naloxone preparation (suboxone) may reduce the risk of diversion. The different sublingual and parenteral absorption profiles of buprenorphine and naloxone are the key factors: if used sublingually, the naloxone will have negligible effects. However, if the combined preparation is injected, the naloxone will have a substantial effect and will attenuate the effects of buprenorphine in the short term and is also likely to precipitate withdrawal in opioid-dependent individuals on full opioid agonists.

567
Q

What is the first line treatment of clozapine-induced constipation?

A

Senna

Stimulant laxatives (senna, bisacodyl or sodium picosulfate) are the first-line treatments for clozapine-induced constipation, if the individual has not passed a bowel movement in two days, after excluding intestinal obstruction. If the laxative is not working after 24 hours, consider adding an osmotic laxative (macrogols or lactulose) or emollient stool softeners (docusate sodium). Regular lactulose and plenty of fluids is important part of management. Avoid bulk-forming laxatives because the cause of constipation in this case is gastric hypomotility. Faecal impaction may require treatment with high dose macrogol or repeated doses of suppositories.

568
Q

HGPRT deletion mutation is linked to which condition?

A

Lesch-Nyhan Syndrome

Lesch-Nyhan syndrome is related to a defect in hypoxanthine guanine phosphoribosyl-transferase (HGPRT) leading to an accumulation of uric acid. This is an X-linked recessive condition leading to intellectual disability. Partial HGPRT deficiency results in gout. Compulsive self-mutilation is an important behavioural phenotype seen in this condition, which is very distressing to these children. Often severe self-biting behaviour is noted (finger/lip biting, with self-splinting in an attempt to prevent the behaviour). The mean age at onset of self-injury is 3.5 years. Men with this syndrome are reported to hit, spit, swear and even become aggressive towards their caregivers. Kidney failure secondary to infection or uric acid deposition (urate stones) is the cause of death in most subjects.

569
Q

Lennox-Gastaut syndrome is characterized by
Select one:
* Triad of infantile spasms, spike-wave complex and intellectual disability
* Spontaneous recovery
* Adolescent onset
* Primarily caused by a metabolic encephalopathy
* Responds well to antiepileptics

A

Triad of infantile spasms, spike-wave complex and intellectual disability

Lennox-Gastaut syndrome is one of the most severe epileptic encephalopathies of childhood onset. It can occur secondary to an underlying brain disorder or idiopathic (i.e., has no known cause). Although Lennox-Gastaut syndrome is commonly characterised by a triad of signs, which include multiple seizure types, slow spike-wave complexes on EEG, and significant learning disability. The children suffer frequent fits of many different types, starting with infantile spasms that often evolve into full-blown syndrome; the age of onset is from 1 to 8 years, peaking at 3 to 5 years. However, unlike isolated infantile spasms, Lennox-Gastaut syndrome tends to be a lifelong epileptic encephalopathy