VPT-0092
QUESTION
A muscarinic antagonist (M2) that is used at a patch behind the ear for controlling chemoreceptor trigger zone mediated vomiting is?
OPTIONS
(A) Apomorphine
(B) Scopolamine
(C) Prochlorperazine
(D) Ondansetron
ANSWER
(B) Scopolamine
EXPLANATION
Scopolamine is a muscarinic antagonist delivered in a transdermal patch behind the ear and can reduce motion- or chemoreceptor-triggered vomiting. Apomorphine is an emetic in dogs, prochlorperazine is a dopamine antagonist, and ondansetron is a serotonin 5-HT3 antagonist.
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Veterinary Pharmacology and Toxicology · 167 Questions
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