antiemetics and antinausea Flashcards
classes of antiemetics/antinausea drugs
anticholinergics
antihistamines
antidopaminergic
neurokinin antagonists
prokinetic
serotonin blockers
tetrahydrocannabinoids
question on exam: if a pt says they have an allergy to something, what do you need to know about it?
what is the reaction and how severe it is. also need to know whether it is an allergy or just an adverse effect
anticholinergic drugs MOA
bind to and block AcH receptors in the inner ear to block transmission of nauseating stimuli
anticholinergic drug example
scopolamine
antihistamine drugs MOA
bind to H1 receptors
antihistamine drug examples
dimenhydrinate
diphenhydramine
antidopaminergic drug MOA
block dopamine receptors in CTZ
what is the other use for antidopimanergic drug, prochlorperazine
intractable hiccups and psychotic disorders
antidopaminergic drug example
prochlorperazine
neurokinin receptor antagonist MOA
inhibit substance P/neurokinin 1 receptors in brain stem
neurokinin receptor antagonists example
aprepitant
what are two drugs that neurokinin receptor antagonists interact with
warfarin and birth control
pro kinetic drug MOA
block dopamine receptors in CTZ and causes CTZ to be desensitized to impulses that it receives from GI tract
pro kinetic drug example
metoclopramide
serotonin blocker MOA
block serotonin receptors in GI tract CTZ and vomiting centre