Psychiatry Flashcards

1
Q

3 core symptoms of depression

A

Low mood
Anergia
Anhedonia

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2
Q

6 somatic/biological symptoms of depression

A
  1. Early morning wakening/sleep disturbance
  2. Loss of appetite + weight/change in appetite
  3. Diurnal variation of mood
  4. Change in libido/reduced libido
  5. Loss of emotional reactivity
  6. Psychomotor agitation/retardation
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3
Q

What is anhedonia?

A

Loss of enjoyment of formerly pleasurable activities

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4
Q

What is another name for obsessive compulsive personality disorder?

A

Anankastic personality disorder

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5
Q

What is the definition of depression?

A

Pervasive lowering of mood

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6
Q

Differential diagnosis of depression

A

Normal sadness
Dysthymia
Schizophrenia (blunting, unreactive affect)
Bipolar disorder
Alcohol/drug withdrawal

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7
Q

What drug, with specific anti-obsessional properties, is used in OCD?

A

Clomipramine (a tricyclic antidepressant)

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8
Q

First line pharmacological management of OCD

A

SSRIs

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9
Q

First line pharmacological management of PTSD

A

SSRIs e.g. sertraline

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10
Q

First line psychological therapy for PTSD

A

CBT

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11
Q

HARD features of PTSD

A

Hyperarousal
Avoidance
Reexperiencing
Distress

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12
Q

How long must core symptoms of depression be present for a diagnosis?

A

At least two weeks

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13
Q

In which patients would you be reluctant to prescribe benzodiazepines?

A

Patients with addiction problems/substance misuse

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14
Q

Main points of ICD-10 criteria for obsessive compulsive personality disorder

A
  1. General criteria of personality disorder must be met
  2. At least four of:
    - Feelings of excessive doubt and caution
    - Preoccupation with details, rules, lists, order organisation or schedule
    - Perfectionism that interferes with task completion
    - Excessive conscientiousness and scrupulousness
    - Undue preoccupation with productivity to the exclusion of pleasure and interpersonal relationships
    - Excessive pedantry and adherence to social conventions
    - Rigidity and stubbornness
    - Unreasonable insistence by the patient that others submit to exactly his or her way of doing things, or unreasonable reluctance to allow others to do things
    - Intrusion of insistent and unwelcome thoughts or impulses
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15
Q

Main points of ICD-10 criteria for OCD

A
  1. Obsessions, compulsions, or both, present on most days for >/= 2 weeks
  2. Obsessions or compulsions cause distress, or interfere with functioning
  3. Obsessions and compulsions share these features:
    - Acknowledged as originating in the mind of the patient
    - Repetitive and upleasant, with at least one acknowledged as excessive or unreasonable
    - Subject tries to resist them (at least one must be unsuccessfully resisted)
    - Carrying out the obsessive thought or compulsion is not in itself pleasurable
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16
Q

Main points of ICD-10 criteria for PTSD

A
  1. Exposure to stressful event or situation of an exceptionally threatening or catastropic nature, which is likely to cause distress in almost anyone
  2. Persistent remembering or reliving of the stressor; or, expriencing distress when exposed to circumstances similar to stressor
  3. Acutal or preferred avoidance of circumstances resembling or associated with the stressor, which was not present before exposure
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17
Q

Medical causes of depression

A

Hypothyroidism
Physical health problems/chronic disease
Medications
Childbirth (postnatal depression)

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18
Q

How is mild depression defined?

A

Core symptoms of depression + 2-3 others

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19
Q

How is moderatre depression defined?

A

Core symptoms of depression + 4 others + impact on daily functioning

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20
Q

Non-pharmacological treatments for depression

A

Self-help
CBT
Interpersonal therapy

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21
Q

Pharmacological treatment of PTSD (not SSRI)

A

Venlafaxine

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22
Q

Other, non-somatic, symptoms of depression (x5)

A

Loss of confidence
Loss of concentration
Guilt
Hopelessness
Suicidal ideation

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23
Q

Pharmacological management of anxiety symptoms in short-term of PTSD

A
  1. Benzodiazepines
  2. Beta-blockers
  3. Promethazine
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24
Q

Psychological therapy for OCD

A

CBT with exposure and response prevention

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25
Psychological therapy specific to PTSD
Eye movement desensitising and reprocessing (EMDR) therapy
26
Psychotic symptoms are usually mood...
Congruent e.g. Nihilistic and guilty delusions 3rd person derogatory auditory hallucinations
27
Risk factors for depression (x6)
Family history History of abuse Substance use Low SES Chronic disease Traumatic life event
28
How is severe depression defined?
Core symptoms of depression + other symptoms + suicidal ideation/marked loss of functioning
29
Signs of depression on MSE
Possible weight loss Psychomotor retardataion (movement, speech) Decreased reactivity Avoiding eye contact Slow + quiet speech
30
Third line pharmacological management of OCD (resistant to SSRIs and clomipramine)
MAOIs e.g. phenelzine
31
5 Ps of Psychiatry
``` Presenting problem Predisposing factors Precipitating factors Perpetuating factors Protective factors ```
32
What does ASEPTIC stand for in the MSE?
``` Appearance and behaviour Speech Emotions - mood and affect Perceptions Thoughts Insight Cognition ```
33
Which medications may cause depression?
Isoretinoin (roaccutane) Beta-blockers
34
Main points of ICD-10 criteria for bipolar disorder
History of 2 mood episodes At least one of: - Hypomania (<4 days) - Mania (>7 days)
35
DSM-IV criteria for bipolar disorder
One episode of mania (or mixed mood); or One episode of hypomania plus a major depressive episode
36
Features of bipolar disorder on MSE: appearance + behaviour
Flamboyantly dressed Self neglect (unkempt/dehydrated) Overactivity Difficult to interview
37
Features of bipolar disorder on MSE: Speech, mood + affect
Increased pressure of speech Increased rate and amount of speech Hard to interrupt Usually elated
38
Features of bipolar disorder on MSE: thoughts
Content: inflated view of own importance, grandiose Form: chance relationships, verbal associations, clang associations
39
Features of bipolar disorder on MSE: perception + insight
May have delusions of persecution or grandiose - usually mood congruent Auditory hallucinations Lacking insight
40
Differential diagnosis of bipolar disorder
Substance use (stimulants, hallucinogens, opiates) Schizophrenia Anxiety disorders/PTSD ADHD or conduct disorder
41
Medications that may induce symptoms of hypomania/mania
Antidepressants Benzodiazepines Antipsychotics e.g. olanzapine, risperidone Lithium (toxicity, or combined with TCAs) Many others
42
Pharmacological management of bipolar disorder
Mood stabilisers: 1. Lithium 2. Anticonvulsants e.g. sodium valproate, carbamazepine, lamotrigine 3. Anti-psychotics: used in acute mania e.g. olanzapine
43
Blood tests needed for a patient on lithium
Renal function (U+Es, Creatinine clearance): Li excreted by kidneys TFTs (hypothyroidism) Calcium
44
Side effects of Lithium
Leukocytosis Insipidus (diabetes) Tremor (fine) Hypothyroidism Increased Urine Mums beware (teratogenic)
45
At what level is lithium toxic?
Upper therapeutic limit = 1.2mmol/L >1.5mmol/L = some symptoms of toxicity >2.0mmol/L = definite, life-threatening toxicity
46
What diuretics are most associated with lithium toxicity
Bendroflumethiazide
47
Effects of lithium toxicity
Blurred vision Coarse tremor (fine tremor = early) Muscle weakness Ataxia N+V Hyperreflexia Circulatory failure Oliguria/polyuria Seizures Coma Slurred speech
48
Example of selective serotonin re-uptake inhibitors (SSRI)
Sertraline Citalopram Fluoxetine
49
Side effects of SSRIs
Nausea + indigestion Worsening of sexual dysfunction Suicidal thoughts Serotonin syndrome
50
Examples of serotonin-norepinephrine uptake inhibitors (SNRIs)
Venlafaxine | Duloxetine
51
Side effectts of SNRIs
Venlafaxine can raise BP + is c/i in heart disease | Similar to SSRIs
52
Examples of tricyclic antidepressants
Amitriptyline | Dosulepin
53
Side effects of TCAs
Anticholinergic effects Dry mouth Tachycardia Constipation Sleepiness Weight gain Urinary retention
54
Examples of monoamine oxidase inhibitors (MAOIs)
Phenelzine | Moclobemide
55
Side effects of MAOIs
Raised BP if taken with tyramine: aged cheese, cured meeats, broad beans
56
Example of atypical antidepressant
Mirtazepine
57
Action of mirtazapine
Alpha-2 antagonist
58
Side effects of mirtazapine
Drowsiness | Weight gain
59
What questionnaires can be useful in detecting/assessing severity of depression?
PHQ-9 HADS BD-II
60
Management of first presentation of mild depression not wanting intervention, or subthreshold depressive symptoms
Active monitoring Discuss problem + concerns Arrange follow-up around 2 weeks time
61
Management of persistent subthreshold depressive symptoms, or mild-to-moderate depression
Low intensity psychological intervention e.g. IAPT Group-based CBT if declining above Consider antidepressants if: - History of moderate or severe depression - Subthreshold depressive symptoms lasting long period (2 years) - Symptoms persisting after other interventions - Mild depression complicating care of chronic physical health problem
62
Management of moderate or severe depression
Antidepressant | High-intensity psychological intervention
63
Important points when starting someone on an antidepressant
Consider suicide risk + toxicity in overdose Symptoms of anxiety may initially worsen May take time to work Should be continued for at least 6 months following remission of symptoms, to prevent relapse
64
What is Section 2 under the Mental Health Act?
Assessment section (although treatment can be given) Allows compulsory admission for up to 28 days Cannot be renewed Can occur anywhere except prison
65
What is Section 3 under the MHA?
Treatment section Allows compulsory admission for up to 6 months Can be renewed idefinitely
66
Who is required to enact a Section 2?
``` 2 doctors (1 must be S12 approved) AMHP ```
67
Evidence required for a Section 2
Should suspect a mental disorder | Risk to individual, or ris to other people
68
Who is required for a Section 3?
2 doctors | 1 AMHP
69
Evidence required for a Section 3
Requires a diagnosis Place of treatment must be identified Treatment must be available Treatment is in their best interests (and for other people)
70
What is Section 4 under the MHA?
Emergency order Lasts 72 hours Used when waiting for a second doctor would lead to an undesirable delay
71
Who is required for a Section 4?
1 doctor | 1 AMHP
72
Requirements for a section 4?
Mental disorder suspected Risk to self or others Not enough time for a 2nd doctor to attend for the assessment
73
What is Section 5(4) under the MHA?
Nurses' holding power Patients in hospital (not A+E) Lasts 6 hours (for until a doctor can attend) Cannot be treated coercively
74
What is Section 5(2) under the MHA?
``` Doctors' holding power Patients in hospital (not A+E) Lasts 72 hours Cannot be done by FY1 Cannot be treated coercively ```
75
What is Section 136 under the MHA?
Police section | For a person suspected of having mental disorder in a public place (not someone's home)
76
What is Section 135 under the MHA?
Police Section | Requires a court order to access a person's home and remove them
77
What is the most common genetic cause of intellectual disability?
Trisomy 21 (Down's syndrome)
78
What is the most common inherited intellectual disability?
Fragile X syndrome
79
Fragile X syndrome in females
Milder symptoms | Premature ovarian failure
80
Facial features of fragile X syndrome
Long, narrow face Prominent jaw Big ears
81
Body features of fragile X syndrome
Large hands and feet Hyperextensible joints Pes planus (flat foot) Macroorchidism
82
Cardiac defect common in Fragile X syndrome
Mitral valve prolapse
83
Genetic testing for Fragile X syndrome
X-linked inheritance >200 CGG repeats in FMR1 gene
84
What level of IQ is defined as a mild intellectual disability?
50-69
85
What level of IQ is defined as a moderate intellectual disability?
35-49
86
What level of IQ is defined as a severe intellectual disability?
20-34
87
What level of IQ is defined as a profound intellectual disability?
<20
88
Causes of intellectual disability?
Genetic abnormalities Prenatal viruses Birth complications e.g. prematurity, hypoxic brain injury, cerebral pasly Childhood illness e.g. meningitis, brain injury, severe neglect
89
How is a personality disorder defined?
Lifelong, persistent, deeply ingrained maladaptive behaviour Characterises an individual Deviates markedly from expected or accepted 'normal' Onset in late childhood or early adolescence Not explained by organic disease or other mental disorder
90
In what categories must a personality disorder deviate from normal?
More than one of: - Cognition - Affectivity - Occupational and social performance - Impulse control and need gratification - Interpersonal function
91
What are Cluster A personality disorders?
'Odd/Eccentric' Schizoid - socially withdrawn Paranoid - delusional Schizotypal - distorted reality
92
What are Cluster B personality disorders
'Dramatic/Erratic' EUPD Histrionic Narcissistic Dissocial
93
What are Cluster C personality disorders?
'Anxious/Fearful' Obsessive compulsive personality disorder (Anankastic) Dependant Avoidant
94
Features of EUPD?
``` Emotional instability Lack of impulse control Outbursts of violence or threatening behaviour are common - especially in response to criticism Low self-esteem/self-image uncertaining Feelings of emptiness Intense and unstable relationships Avoids abandonment Self harm/suicide Engage in dangerous, risky behaviour ```
95
First line psychological management of EUPD
DBT (dialectical behaviour therapy)
96
Common features in personal history of people with EUPD
Insecure attachment Domestic violence Childhood sexual abuse
97
Criteria for a delusion
Certainty held with absolute conviction Incorrigibility Impossibility or falseity of content
98
Ways of describing delusions
Mood congruent vs incongruent Themes: persecutory, grandiose, erotomania, jealousy, poverty Specific delusions e.g. delusions of reference (believing insignificant things have a personal meaning or significance)
99
Capgras syndrome
Form of delusional misidentification - person believes another person has been replaced by an exact double Similar to: - Intermetamorphosis (person transformed into different person) - Fregoli syndrome (stranger is someone familiar) - Syndrome of subjective doubles (another person been transferred into your own self)
100
Folie a deux
Where a delusional belief is transferred form a psychotic person to another inidividual, usually close to them The associate is often socially, intellectually or physically deprived or disadvantaged
101
What is an obsession?
A recurrent thought, impulse or image that enters the subject's mind despite resistance
102
What is formication?
A form of haptic or tactile hallucination where the person feels insects crawling in, on, or underneath the skin. Associated with intoxication or withdrawal from alcohol and drugs (particularly cocaine) Can also occur in psychosis
103
What is an overvalued idea?
A belief not held quite as strongly as a delusion, and is typically more understandable
104
What is passivity?
Feeling as if they are being taken over/not in control of own thoughts and actions
105
Examples of thought interference
Insertion Withdrawal Broadcasting
106
Circumstantial speech/thought
Irrelevant details and digressions overwhelm the direction of the thought process Cannot provide an answer without excess, unnecessary detail Question will still be answered in the end Seen in mania and anankastic personality disorder
107
Tangenital speech
Patient goes off on a tangent and will not answer the question
108
Perseveration speech
Repeating ideas or words despite an attempt to change the topic
109
Clanging speech
Speech pattern where sounds rather than meaning govern the use of words May occur during flight of ideas
110
Neologisms
Use of made up words
111
Echolalia
Repetition of someone else's speech, including the question that was asked Occurs in schizophrenia and intellectual disabilities
112
Flight of ideas
Patients leap from one topic to another with minimal links between them Ideas may be linked by puns, rhymes etc. Seen in hypomania/mania
113
Loosening of associations
Lack of connection between ideas | Seen in schizophrenia
114
Word Salad
Complete jumble of words
115
Verbigeration
Sounds/words repeated in a senseless way
116
Knights move thinking
Unexpected and complete illogical leaps from one topic to another
117
Thought block
Abrupt and complete interruption in stream of thought Seen in schizophrenia Often accompanies thought withdrawal
118
Derealisation
The feeling of unreality or detachment with respect to surroundings or external world
119
Depersonalisation
Subjective feeling of altered reality of the self Alteration in the perception or experience of the self so that one feels detached from and as if one is an outside observer of one's mental procceses or body
120
Akathisia
Subjective sense of an uncomfortable desire to move, relieved by repeated movement of the affected part (typically legs) Side-effect of neuroleptic drugs
121
Autochthonous delusion
A primary delusion which appears to arise fully formed in a patient's mind without explanation
122
Automatism
Behaviour which is apparently conscious in nature that appears in the absence of full consciousness e.g. in a seizure
123
Blunting of affect
Loss of the normal degree of emotional sensitivity and sense of the appropriate emotional response to events Negative symptoms of schizophrenia
124
Belle indifference
Surprising lack of concern for, or denial of, apparently severe functional disability
125
Catatonia
Increased resting muscle tone which is not present on active or passive movement Motor symptom of schizophrenia
126
Clouding of consciousness
Level between full consciousness and coma
127
Confabulation
Process of describing plausibly false memories for a period for which the patient has amnesia Seen in Korsakoff psychosis and dementia
128
Conversion
Development of features suggestive of a physical illness which are instead attributed to psychiatric illness or emotional disturbance
129
Cotard syndrome
Psychotic depressive illness seen in eldery people in particular Severely depressed mood with nihilistic delusions and/or hypochondriacal delusions
130
Cyclothymia
Personality characteristic of cyclical mood variation to a lesser degree than bipolar disorder
131
Dissociation
Separation of unpleasant emotions and memories from consciousness awareness with subsequent disruption to the normal integrated function of consciousness and memory
132
What are the first rank symptoms of schizophrenia?
Auditory hallucinations : - Third person auditory hallucinations - Thought echo - Running commentary Delusions of thought interference: - Thought insertion - Thought withdrawal - Thought broadcasting Delusions of control - Passivity of affect - Passivity of impulse - Passivity of volitions - Somatic passivity Delusional perception: a primary delusion of any content that is reported by the patient as having arisen following the experience of a normal perception
133
Somatic passivity
Experience of bodily sensations being imposed by external agency
134
Flattening of affect
Dimunition of the normal range of emotional experience | Negative symptom of schizophrenia
135
Formal thought disorder
Used to refer to three different groups of psychiatric symptoms: - All pathological disturbances in the form of thought - Synonym for schizophrenic thought disorder - The group of first-rank symptoms which are delusions regarding thought interference (insertions, withdrawal, and broadcasting)
136
Concrete thinking
Loss of ability to understand abstract concepts and metaphorical ideas leading to a strictly literal form of speech and inability to comprehend allusive language Seen in schizophrenia and dementing illness
137
Hallucination
An internal perception without a corresponding external object
138
Pseudo-hallucination
Lacks one or all of the characteristics of a true hallucination: - Perceived in external space - Distinct from imagined images - Outside concious control - Possessing relative permanence
139
Delusional perception
A primary delusion which is recalled as having arisen as a result of a perception Percept is a real, external object, and not a result of hallucination
140
Illusion
A type of false perception in which the perception of a real world object is combined with internal imagery to produce a false internal percept
141
Incongruity of affect
Objective impression that the displayed affect is not consistent with the current thoguths or actions Occurs in schizophrenia
142
Mannerism
Abnormal and occasionally bizarre performance of a voluntary, goal-directed activity
143
Positive symptoms of schizophrenia
Delusions Hallucinations Passivity phenomena Thought alienation Lack of insight Disturbance of mood
144
Negative symptoms of schizophrenia
Blunting of affect Amotivation Poverty of speech + thought Poor non-verbal communication Deterioration in functioning Self-neglect lack of insight
145
Second rank symptoms of schizophrenia
Other delusions/hallucinations Breaks in thought fluency: incoherence, irrelevant speech, neologisms Catatonic behaviour e.g. excitement, stupor, mutism, posturing, wavy flexibility, negativism Negative symptoms
146
Number of first/second rank symptoms for diagnosis of schizophrenia
One 1st rank symptom, or two 2nd rank, acutely for 1 month | With evidence of disturbance of functioning for 6 months
147
Side effects of aripiprazole
Akathisia | Decreased prolactin
148
Side effects of olanzapine
Anticholinergic symptoms Diabetes/dysglycaemia Hyperlipidaemia/hypercholesterolaemia Orthostasis Sedation Weight gain
149
Side effects of paliperidone
Acute parkinsonism Elevated prolactin Weight gain
150
Side effects of quetiapine
Diabetes Orthostasis Sedation Weight gain
151
Side effects of risperidone
Acute parkinsonism Elevated prolactin Weight gain
152
Side effects of ziprasidone
Prolonged QTc interval
153
Hypnogogic hallucinations
Occur when an individual is falling asleep | Mostly auditory
154
Hypnopompic hallucinations
Occurs as a person awakes | Experience continues once the individual's eyes open from sleep
155
Action + side effects of mirtazapine
Noradrenergic and specific serotonergic antidepressant Sedation Weight gain
156
Torticollis
Cervical dystonia - an acute dystonic reaction | Commonly caused by antipsychotic medications
157
Indications for hospital admission in patients with anorexia nervosa
Low weight: 85% or less of expected weight and/or less than 3rd percentile for BMI Lack of any weight gain Significant oedema Physiological decompensation e.g. - Severe electrolyte imbalance - Cardiac disturbances - Altered mental status - Orthostatic differential > 30/min Temperature less than 36 degrees Pulse <45 bpm Psychosis or high risk of suicide Symptoms refractory to outpatient treatment
158
Signs + symptoms of a TCA overdose
``` Tachycardia Drowsiness Dry mouth N+V Urinary retention Confusion Agitation Headache Hypotension Hyperreflecia Dilated pupils Hyperthermia ```
159
Russell's sign
Calluses on knuckles, causing by being scraped across teeth | Seen in bulimia nervosa
160
What is refeeding syndrome
The potentially fatal shifts in fluids and electrolytes that may occur in malnourished patients receiving artificial refeeding
161
Main biochemical feature of refeeding syndrome
Hypophosphataemia
162
Features of refeeding syndrome
``` Low phosphate Abnormal sodium Abnormal fluid balance Changes in glucose, fat and protein metabolism Thiamine deficiency Low potassium Low magnesium ```
163
Conditions predisposing to refeeding syndrome
Eating disorders Chronic alcoholism Malabsorption conditions e.g. IBD Chronic malnutrition Poorly contrólele diabetes Oncological conditions Post-operative state
164
Mechanism of refeeding syndrome
Glycaemia leads to increased insulin, decreased glucagon —> glycogen, protein and fat synthesis which requires phosphate, magnesium and thiamine Insulin —> absorption of potassium into cells Magnesium and phosphate also taken up into cells Water follows by osmosis
165
Complications of thiamine deficiency
Wernicke’s encephalopathy | Korsakoff’s syndrome
166
Mechanism of changes in sodium and fluid metabolism in refeeding syndrome
Introduction of CHO into diet —> decreased renal sodium and water excretion If fluid depletion instituted —> fluid overload —> congestive cardiac failure, pulmonary oedema, cardiac arrhythmia
167
Complications of refeeding syndrome
Potassium: arrhythmias, cardiac arrest Magnesium: cardiac dysfunction, neuromuscular complications Glucose: excess glucose, fatty liver, increased CO2, hypercapnoea, respiratory failure Thiamine deficiency Heart failure Pulmonary oedema Arrhythmia
168
How long must food intake be decreased for to be at risk of refeeding syndrome?
5 days
169
Features of histrionic personality disorder
Distinguished by a pattern of exaggerated emotionality and attention-seeking behaviours Shallow affect Egocentricity Craving attention and excitement Manipulative behaviour Seductive or provocative behaviour Easily influenced Preoccupied with physical attractiveness
170
Management of histrionic personality disorder
Psychodynamic/CBT/Group therapy
171
Features of schizoid personality disorder
Emotionally cold/flattened affect Detachment Lack of interest in others Excessive introspection and fantasy Solitary Little interest in sexual experiences Indifferent to praise or criticism
172
Management of schizoid personality disorder
Psychodynamic and/or group therapy
173
Features of paranoid personality disorder
Sensitive Suspicious Consipiratorial explanations Self-referential attitude Distrust of others Holds grudges
174
Features of schizotypal personality disorder
Interpersonal discomfort Magical thinking/peculiar ideas Unusual perceptions Odd appearance and behaviour Inappropriate affect Vague + circumstantial Delusions of reference (but may be persuadeable)
175
Features of acute confusional state/delirium
Impaired level of consciousness Impairment of cognition - disorientation, recent memory + abstract thinking Disturbance in sleep - nocturnal worsening of symptons Psychomotor agitation Emotional lability Perceptual abnormalities - typically visual Speech disorder - rambling, incoherent + thought disordered Paranoid delusions Rapid onset with fluctuations in severity
176
Management principles of acute confusional state/delirium
Treat precipitating cause + exacerbating factors Environmental + supportive measures e.g. reduce noise, incude clock, correct sensory impairments Avoid sedation unless absolutely necessary Regular clinical review + follow-up
177
Treatment for an acute manic episode in Bipolar affective disorder
Atypical antipsychotic e.g. olanzapine, quetiapine, risperidone, clozapine Then valproate, lamotrigine or lithium
178
Treatment of depressive episode in bipolar affective disorder
Psychological interventiom Avoid antidepressants alone - can cause rapid cycling of mood Atypical antipsychotic e.g. quetiapine or olanzapine +/- fluoxetine Add anticonvulsant lamotrigine, or lithium adjunct
179
Maintenance therapy in bipolar disorder
First line = lithium If ineffective, add valproate Avoid in women of chidbearing age where possible
180
Management of acute alcohol withdrawal
Benzodiazepine (likely chlordiazepoxide) or Carbamazepine Alternative = clomethiazole Give thiamine to replenish low B1 stores
181
Maintenance of alcohol detoxification
Acamprosate Disulfiram Started 6-12 months after abstinence, to prevent relapse
182
Disulfram
Aversive drug in maintenance of alcohol abstinence Causes flushing, headache, N+V and tachycardia Inhibits conversion of alcohol to CO2 and water --> build up of acetaldehyde S/E = halitosis and headache
183
Acamprosate
Anti-craving drug in maintenance of alcohol abstinence | S/E = GI upset, pruritiss, rash, altered libido
184
Delirium tremens
Acute confusional state secondary to alcohol withdrawal Onset 1-7 days after last drink (peak at 48-72 hours) Clouding of consciousness, disorientation, amnesia, psychomotor agitation, hallucinations, terror-stricken face Tachycardia, sweating etc. Tremor
185
Management of delirium tremens
High dose benzodiazepine e.g. chlordiazepoxide (lorazepam also used) May also give IV Pabrinex (high dose vitamin B1) Fluid replacement Dextrose
186
Triad of serotonin syndrome
Neuromuscular excitability Autonomic dysfunction (hypo or hypertension) Altered mental state
187
Common features of serotonin syndrome
Autonomic effects: hyper/hypotension, tachycardia, fever, diarrhoea Psychiatric effects: agitation, confusion, hypomania, seizures Muscle/peripheral neurological effects: increased tone, tremor, shaking, hyperreflexia, clonus
188
Possible blood test findings in serotonin syndrome
Increased WCC Increased CK | Increased CK
189
Management of serotonin syndrome
Stop causative medications Manage complications Oral cyproheptadine - serotonin-antagnostic effects
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Complications of serotonin syndrome
Hyperthermia Rhabdomyolysis ARDS DIC Hypertension Seizures Renal failure
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Agoraphobia
Fear of public spaces/fear of entering a public space from which immediate escape would be difficult int he event of a panic attack Fear in, or avoidance of at least 2 of: crowds, public spaces, travelling alone, travelling away from home Symptoms of anxiety
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Features of anxious (avoidant) personality disorder
Tense Self-conscious Fear of negative evaluation by others Timid Insecure Avoidance of social or occupational activities
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Management of anxious (avoidant) personality disorder
Psychodynamic/CBT/group therapy | Social skills training
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Panic disorder
Recurrent panic attacks not consistently associated with a specific situation or object, often spontaenous >4 attacks in one month Sudden onset with somatic symptoms, and cognitive deficits Often believe some large misfortune is about to happen e.g. heart attack Sweating, tachycardia, palpitations, tremor, hyperventiliation Minutes-hours
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Management of panic disorder
Psychoeducation Breathing/relaxation techniques CBT SSRIs may reduce frequency and severity of attacks e.g. citalopram
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Mechanism of benzodiazepines
Facilitate and enhance binding of GABA to GABA-A receptors
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Mechanism of typical antipsychotics
Block postsynaptic dopamine D2 receptors --> blocks dopaminergic pathways of CNS
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Blood test results in neuroleptic malignant syndrome
``` Raised CK due to muscle rigidity Raised WCC Deranged LFTs Acute renal failure --> abnormal U+Es Metabolic acidosis --> low pH, low HCO3 ```
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Neuroleptic malignant syndrome
Adverse reaction to antipsychotic (and other) medication e.g. anti-parkinsonian agents (often withdrawal), anti-depressants and others
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Features of neuroleptic malignant syndrome
Rigidity Hyperthermia Delirium Fluctuating BP Tachycardia Sweating Extrapyramidal side effects
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Management of neuroleptic malignant syndrome
Stop drug/restart anti-parkinsonian if relevant Treat hyperthermia aggressively Circulatory +ventilatory support where necessary Benzos to control agitation
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Early symptoms of alcohol withdrawal
Autonomic overactivity due to withdrawal of alcohol's inhibition Tremor Nausea Sweating Agitation Tachycardia/palpitations Raised BP Often features early in the morning, where a drink will relieve the symptoms
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Later symptoms of alcohol withdrawal (24-48 hours)
Delusions COnfusion Diarrhoea Epileptic seizures/convulsions (peak incidence at 36 hours) Auditory hallucinations After 48-72 hours --> delirium tremens
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Action of alcohol on nervous system
GABA agonist GABA neurones are inhibitory --> alcohol suppresses brain activity
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Formication
A hallucination of the feeling of insects crawling in, on, or under your skin Seen in many conditions, but associated with alcohol withdrawal/delirium tremens
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Features of Wernicke's encephalopathy
Altered mental status Ataxic gait Ophthalmoplegia (often abducens nerve) Nystagmus Nausea Occurs in any type of thiamine deficiency e.g. diet, gastric carcinoma, pernicious anaemia
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Features of Korsakoff's syndrome
Anterograde memory disorder - old memories can be accessed, but new memories cannot be consolidated Distorted sense of time Confabulation No clouding of consciousness Peripheral neuropathy
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Management of wernicke's encephalopathy
Thiamine! Usally in conjunction with other B vitamins. Given IV or IM Sedation if necessary Fluid/electrolytes
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Management of Korsakoff's
Life-long chronic illness Thiamine supplements may have some role
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Side effects of electroconvulsive therapy
Memory loss = most important - Retrograde amnesia is more common Immediate: - Drowsiness - Confusion - Headache - Nausea - Aching muscles - Loss of appetite Long-term: - Apathy - Anhedonia - Difficulty concentrating - Loss of emotional responses - Difficulty learning new info
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Taking which medications alongside SSRIs increase the risk of serotonin syndrome
Triptans MAOIs TCAs SNRIs Carbamazepine Many types of analgesia e.g. opiod medications Lithium
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Specific warnings for use of antipsychotics in elderly patients
Increased risk of stroke Increased risk of VTE
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SSRIs and pregnancy
Weigh up benefits + risk Use during first trimester gives small increased risk of congenital heart defects (paroxetine especially) Use during third trimester can result in persistent pulmonary hypertension of the newborn
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Possible cardiac issue/s associated with citalopram/escitalopram
QT prolongation and/or ventricular arrhythmias including torsade de pointes --> take an ECG in patients with history of cardiac disease
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What should be measured when starting someone on an SSRI
U+Es to look for hyponatraemia High risk: measure level before starting treatment, 2-4 weeks after starting treatment and every 3 months after
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Lithium monitoring
Weekly after initiation, and after each dose change Done until concentrations are stables --> then in 3 months time, then every 3 months for the first year --> then can go to every 6 months in low-risk patients, or continue on 3 months indefinitely TFTs should be monitored 6-monlty
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Management of a patient taking an antidepressant as a monotherapy who has developed mania or hypomania
Consider stopping the antidepressant Offer an antipsychotic regardless: - Haloperidol - Olanzapine - Quetiapine - Risperidone If one of these fails at top dose/not tolerated --> try an alternative from the list 3rd line = lithium 4th line = sodium valproate
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Features of somatisation disorder
Multiple physical SYMPTOMS Present for at least 2 years Patient refuses to accept reasurrance or negative test results
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Features of illness anxiety disorder/hypochondriasis
Persistent belief in presence of underlying serious DISEASE e.g. cancer Patient refuses to accept reassurance or negative test results
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Step 1 in management of GAD
Education about GAD + active monitoring
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Step 2 in management of GAD
Low-intensity psychological interventions e.g. individual non-facilitated self-help, or individual guided self-help, or psychoeducational groups
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Step 3 in management of GAD
High-intensity psychological interventions eg. CBT or applied relaxation And/or drug treatment
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Step 4 in management of GAD
Highly specialist input e.g. mutli-agency teams
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Drug treatment of GAD
Sertraline as first-line SSRI If sertraline ineffective, offer an alternative SSRI or SNRI If these are not tolerated, consider offering pregabalin
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How long must symptoms be present for in order to make a diagnosis of PTSD
Minimum 4 weeks/1 month Less than this time = acute stress reaction
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Management of acute dystonia
Procyclidine
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Catatonia
Stopping of voluntary movement or staying still in an unusual position
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Which antipsychotic should be used in someone with symptoms of hyperprolactinaemia
Aripiprazole
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Choice of SSRI in children + adolescents
Fluoxetine
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Discontinuation of an SSRI
Dose should be gradually reduced over a 4 week period (not necessary for fluoxetine)
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Symptoms of discontinuation of SSRIs
FIRM STOP Flu like sx Insomnia Restlessness Mood swings Sweating Tummy problems (pain, cramps, D+V) Off balance Paraesthesia
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Factors associated with poor prognosis in schizophrenia
Strong family history Gradual onset of symptoms Low IQ Prodromal phase of social withdrawal Lack of obvious precipitant Younger age at diagnosis Predominant negative symptoms
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Medication used to treat EPSEs with antipsychotics
Anti-cholinergic medication e.g. procyclidine In tardive dyskineisa, given tetrabenazine instead
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Medication used to reverse sedative effects of benzodiazepines
Flumazenil
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Pharmacological intervention in opioid detoxification
1st line = methadone, or buprenorphine May consider lofexidine
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Scoring of PHQ-9
Ranges from 0-27 5-9 = mild 10-14 = moderate 15-19 = moderately severe 20+ = severe depression
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Scoring of GAD-7
Ranges from 021 0-4 = minimal anxiety 5-9 = mild anxiety 10-14 = moderate anxiety 15+ = severe anxiety
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Typical features of obsessive thoughts
Typically egodystonic i.e. very different to patient's normal beliefs and values Sexual content is relatively common Usually resisted Usually intrusive + repetitive Can occur in depressive disorders as well as obsessive disorders
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Strongest risk factor for psychotic disorders
Family History
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What physiological elements are raised in anorexia nervosa
Gs and Cs Growth hormone Glucose salivary Glands Cortisol Cholesterol Carotinaemia
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What physiological elements are low in anorexia nervosa
Hypokalaemia FSH, LH, oestrogen + testosterone T3
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Metabolic consequence of long-term lithium use
Hyperparathyroidism --> hypercalcaemia 'Stones, bones, abdominal moans + psychic groans'
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Which anti-psychotic medication may make seizures more likely?
Clozapine - reduces seizure threshold
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Risk of taking NSAIDs in a patient on an SSRI
GI bleeding risk --> give PPI protection
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Adverse effects of atypical antipsychotics
Weight gain Hyperprolactinaemia Increased risk of stroke/VTE in the elderly
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Preferred choice of antidepressant following an MI
Sertraline
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Antipsychotic to use in patients who have symptoms of prolactin elevation
Aripiprazole - most tolerable side effect profile of atypical antipsychotics
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What is tardive dyskinesia
EPSE of typical antipsychotics Late onset of abnormal, involuntary choreoathetoid movements in patients Often irreversible Can involve chewing, pouting or ecessive blinking
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Indications for electroconvulsive therapy
Treatment resistant severe depression Manic episodes An episode of moderate depression known to respond to ECT in the past Life threatening catatonia
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Contraindication to ECT
Raised intracranial pressure
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Risk factors for GAD
Aged 35-54 Being divorced or separated Living alone Being a lone parent
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Protective factors for GAD
Aged 16-24 Being marred or cohabiting
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Management of paracetamol overdose
Within 1 hour of ingestion: activated charcoal Within 8 hours of ingestion, above treatment line: N-acetylcysteine. Total dose divided into 3 consecutive IV infusions. First infusion done over an hour
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Cocaine withdrawal
First 24 hours after a period of high-intensity use (first phase) = - Increased hunger + cravings - Anxiety - Fatigue - Irritability - Lack of motivation Second phase lasts up to 10 weeks Final phase shows decrease in most withdrawal symptoms, but low mood can persist (up to 6 months)
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COAT RACK mnemonic for Wernicke-Korsakoff's
Wernicke's (acute phase) --> - Confusion - Ophthalmoplegia - Ataxia - Thiamine treatment Korsakoff's (chronic phase) --> - Retrograde amnesia - Anterograde amnesia - Confabulation - Korsakoff's psychosis
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Typical hallucinations seen in delirium tremens
Liliputian i.e. seeing lots of small people
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What are extracampine hallucinations
Hallucinations outside the realm of physical possibility Seen in schizophrenia and other psychotic illnesses