Corrections pt. 2 Flashcards
When do most cases of postnatal depression start?
When do they peak?
Most start within a month.
Most typically peak around 3 months.
Management of postnatal depression?
- reassurance & support
- CBT
- SSRIs if symptoms are severe
Which SSRI is typically recommended in postnatal depression? Why?
Paroxetine: because of the low milk/plasma ratio (safety in breastfeeding)
Which SSRI is typically avoided in postnatal depression? Why?
Fluoxetine: due to a long half life (safety in breastfeeding)
Most appropriate treatment option in acute episodes of mania/hypomania?
Antipsychotics e.g. olanzapine, quetiapine, risperidone
What is ‘anankastic’ personality disorder also known as?
Obsessive compulsive personality disorder
OCD vs OCPD?
OCD:
- recurrent, intrusive, unwanted thoughts and repetitive behaviours
- marked anxiety or distress due to symptoms
- symptoms can fluctuate with anxiety
OCPD:
- someone always wants to be in control
- does not experience anxiety or distress due to symptoms
- strict orderliness & perfectionism
- traits are persistent over time
What is conversion disorder?
Which a person experiences physical and sensory problems, such as paralysis, numbness, blindness, deafness or seizures, with no underlying neurologic pathology.
Symptoms of frontotemporal dementia?
- behaviour and/or personality changes e.g. swearing, stealing, increased interest in sex, deterioration in personal hygiene habits
- socially inappropriate, impulsive, or repetitive behaviors.
- apathy
- lack of empathy
- language problems e.g. words in wrong order, using words incorrectly
- memory problems (tend to occur later on compared to other forms of dementia)
What condition is associated with ventricular enlargement and cortical atrophy on a head CT?
Alzheimer’s dementia (also normal with aging).
1st line medical management of Alzheimer’s disease?
Actetylcholinesterase inhibitors:
- donepezil
- galantamine
- rivastigmine
What are the 3 acetylcholinesterase inhibitors licensed for use in AD?
1) donepezil
2) galantamine
3) rivastigmine
2nd line medical management of AD?
Memantine (an NMDA receptor antagonist)
Who is memantine reserved for in AD?
1) moderate Alzheimer’s who are intolerant of, or have a contraindication to, acetylcholinesterase inhibitors
2) as an add-on drug to acetylcholinesterase inhibitors for patients with moderate or severe Alzheimer’s
3) monotherapy in severe Alzheimer’s
What class of drug is rivastigmine?
acetylcholinesterase inhibitor
What are the 5 stages of grief?
1) denial
2) anger
3) bargaining
4) depression
5) acceptance
What is typically seen in the ‘denial’ stage of grief?
- feeling of numbness
- pseudohallucinations of the deceased (auditory and visual)
- people may focus on physical objects that remind them of their loved one or even prepare meals for them
Who are abnormal or atypical grief reactions more likely to occur in?
- women
- if death is sudden and unexpected
- problematic relationship before death
- if the patient has not much social support.
What are some features of atypical grief reactions?
- delayed grief: sometimes said to occur when more than 2 weeks passes before grieving begins
- prolonged grief: difficult to define as normal grief reactions may take up to and beyond 12 months
- suicidal thoughts
- depression, deep sadness, guilt or self blame
What is acute intermittent prophyria (AIP)?
A rare autosomal dominant condition caused by a defect in porphobilinogen deaminase, an enzyme involved in the biosynthesis of haem.
This results in the toxic accumulation of delta aminolaevulinic acid and porphobilinogen
Which enzyme is defected in porphyria?
Porphobilinogen deaminase: an enzyme involved in the biosynthesis of haem
What accumulates in porphyria?
Delta aminolaevulinic acid and porphobilinogen
How does porphyria typically present?
Abdo & neuro symptoms in 20-40 years olds.
- abdo: abdo pain & vomiting
- neuro: motor neuropathy
- psych: depression
- HTN & tachycardia common
What is classical finding in porphyria?
Urine turns deep red on standing.
Investigations in porphyria?
- urine turns deep red on standing
- raised urinary porphobilinogen
- assay of red cells for porphobilinogen deaminase
- raised serum levels of delta aminolaevulinic acid and porphobilinogen
Which drugs may precipitate an attack of porphyria?
barbiturates
halothane
benzodiazepines
alcohol
oral contraceptive pill
sulphonamides
Which type of delusional disorder is characterised by the false absolute certainty of the infidelity of a partner?
Othello syndrome
Dysthymia vs major depressive disorder?
Dysthymia (also called persistent depressive disorder) –> fewer symptoms but lasts longer (>2 years)
Depression –> more symptoms but can be diagnosed after 2 weeks
What is dissociative fugue?
Individuals with dissociative disorders may embark on unexpected travels without any recollection of the journey or their original identity. They may adopt a new identity during the fugue state and only regain awareness of their primary identity upon resolution.
Somatic-type delusional condition vs hypochondriasis?
Somatic type: people are utterly convinced that the cause of their ailments is physical.
Hypochondriasis: can consider the possibility that the feared illness is not actually present.
1st line management of phobias?
CBT
Management of manic episode in patient with bipolar disorder?
1st line: lithium
2nd line: sodium valproate
Why are SSRIs avoided in GI bleeding?
there is an increased risk of gastrointestinal bleeding in patients taking SSRIs.
Side effects of SSRIs?
1) GI symptoms (most common)
2) increased risk of GI bleeding: consider prescribing PPI if patient is also taking NSAID
3) hyponatraemia
4) potential for initial increase in agitation & anxiety
When should you consider prescribing a PPI for patients taking SSRIs?
If they are also taking NSAIDs
What are the most common substances that cause substance-induced psychotic disorder?
- amphetamines
- alcohol
- cannabis
- cocaine
Stepwise management of OCD?
1) CBT including exposure and response prevention (ERP)
2) SSRIs
3) Consider clomipramine (alternative 1st line to an SSRI)
What is an alternative to SSRIs in OCD?
Clomipramine
Describe dose & duration of SSRI in OCD vs depression
SSRI usually requires a higher dose and a longer duration of treatment in OCD.
How long does it typically take for an initial response to SSRIs in OCD?
at least 12 weeks
What PHQ-9 score indicates ‘less severe’ depression?
<16
What PHQ-9 score indicates ‘more severe’ depression?
> /= 16
How can infections or inflammation predispose to clozapine toxicity?
Cloxapine is metabolised by the P450 enzymes. Downregulation of these enzymes by cytokines in infection/inflammation decreases the metabolism of clozapine, leading to a raised clozapine level.
Side effects of memantine?
- sleepy/dizzy
- headaches
- constipation
- SOB
Side effects of acetylcholinesterase inhibitors (e.g. donepezil, rivastigmine)?
- diarrhoea
- N&V
- bradycardia
- increased salivary production
- urinary incontinence
- insomnia (donepezil)
Remember –> opposite of anticholinergics
What is the delusional disorder in which the patient believes that someone close to them has been replaced by a clone?
Capgras delusion
What is the delusional disorder where a patient believes that everyone they meet is the same person but with different disguises?
Fregoli delusion
What characterises histrionic personality disorder?
Excessive displays of emotions and attention seeking behaviours
- may be sexually inappropriate
- may consider relationships more intimate than they really are
Where in the digestive system is the majority of alcohol absorbed?
The proximal small intestine
How long does a section 5(2) last up to?
72 hours
What ECG finding is common in a patient with anorexia?
Prolonged QT interval (>450ms).
It is important to detect this as it can predispose to potentially fatal arrhythmias
What are the main side effects of sodium valproate?
Mneumonic: VALPROATE
V - vomiting
A - alopecia (hair loss)
L - liver toxicity
P - pacreatitis/panctyopenia
R - retention of fats (i.e. weight gain)
O - oedema
A - anorexia
T - tremor
E - enzyme inhibition
What investigation should you always do before starting patients on anti-cholinesterase inhibitors (e.g. donepezil)?
ECG
Contraindications for anti-cholinesterase inhibitors (e.g. donepezil)?
1) QT prolongation
2) 2nd or 3rd degree heart block
3) sinus bradycardia <50 bpm
1st line treatment of manic episodes?
Lithium, or atypical antipsychotics.
What class of drug is clomipramine?
TCA