psych Flashcards
physical symptoms no explanation 2 years, patient refuses to accept reassurance or negative test results
somatisation disorder
overdose on paracetamol treat with
N-Acetylcysteine
overdose of amitriptyline
IV bicarbonate
fraudulent simulation or exaggeration of symptoms with the intention of financial or other gain
Malingering
autism 3 necessary features
global impairment of language and communication
impairment of social relationships
ritualistic and compulsive phenomena
how do you stop SSRIs?
which SSRI is worst and best for stopping
When stopping a SSRI the dose should be gradually reduced over a 4 week period (this is not necessary with fluoxetine). Paroxetine has a higher incidence of discontinuation symptoms.
SADPERSON score useful for?
suicide risk
PHQ-9 score is
a 9 question tool for depression
what percentage of Alzheimers is genetic?
what are the genes involved?
5-10%
basic pathophysiology of Alzheimers
amyloid precursor protein is a intramembrane protein in cells in the brain. it is usally cleaved by gamma secretase and alpha secretase. if another enzyme beta secretase cleaves instead then you create an insoluble protein which builds up outside of cells forming plaques and causing tau phosphorylation (we think)
tau proteins inside neurons which normally support it are phosphorylated. they change shape and form clumps called neurofibrillary tangles
what seperates mania from hypomania?
the presence of psychotic symptoms = mania
which tool for post natal depression?
edinburough scale
What is the most appropriate time to take blood samples for therapeutic monitoring of lithium levels?
12 hours after last dose
do Phenytoin levels need to be monitored?
Phenytoin levels do not need to be monitored routinely but trough levels, immediately before dose should be checked if:
- adjustment of phenytoin dose
- suspected toxicity
- detection of non-adherence to the prescribed medication.0
clozapine, what must you check?!
FBC for agranulocytosis