tricyclic antibiotics 2 Flashcards
(79 cards)
how long for therapeutic effect tricyclics? ssri?
2-3 weeks
mech action tca
unknown, inhibits norepi neuronal uptake mild 5-h serotonin receptor
metabolism tca
liver, 1/2 life is 8-84hr, large vol distribution
s/e TCA
orthostatic hypotension, tachycardia, tachy, blurred vision, dry mouth, sedation, delirium, tremors, weight gain, neurolepitc malignant
cns toxicity tca s/s
cognitive, motion, psych changes
overdose tCA-
fatal arrhythmias
SSRIs mech action
modulate serotonin neurons in the brain
s/e ssris
no anticholinergic/cardiac s/e, nausea, vomiting, anxiety, insomnia, weight loss
1/2 life ssri
2-3 days
MAOIs
ihibit MAO-A and MAO-B but action at MAO-a, which inhibits metabolism of norepi
s/e maois
hepatotoxic,cardiac toxic with tyrosine, tremors, orthostatic htn, hyperpyrexia with certain meds
trazodone
mech unknown
s/e trazodone
no muscarinic effects, CNS stim with insomnia, tremors
contraindications trazodone
seizures and head trauma
lithium
replaces sodium at certain synapses mood stabilizer, narrow therapeutic window
s/s lithium toxicity
n,v,diarrhea, abd pain, polyuria, sedation
what may occur with chronic lithum use?
hypothyroidism
antipsych meds do what
block dopamine in the brain which is therapeutic at the mesolimbic-mesocortical system but the nigostraital system causes extrapyrimidial side effects
s/e antipsychotics
sedation secondary to histamine release, extrapyradamidal side effects (acute dystonia, akathisa, parkinsonism, tardive dyskinesia
what is a late, occuring s/e of antipsychotics
tardive dyskinesia- usually irreversible
how do you treat acute dystonia
treat with congentin
how do you treat akathisia
benzo/beta block
s/s neuroleptic malignant syndrome
fever, diffuse muscle pain, severe eps, autonomic dysfunction
tx neuroleptic malignant syndrome
tx with parlodel, cooling, hydration, dantrium