Which drug is most effective for controlling chemotherapy-induced nausea and vomiting?

Enhance your readiness for the Physician Assistant Clinical Knowledge Rating and Assessment Tool (PACKRAT) 4 Exam. Utilize our flashcards and multiple-choice questions, complete with hints and explanations, to ace your upcoming test!

Multiple Choice

Which drug is most effective for controlling chemotherapy-induced nausea and vomiting?

Explanation:
Chemotherapy-induced nausea and vomiting primarily arise from serotonin release in the gut that activates 5-HT3 receptors on vagal afferents, sending signals to the vomiting center. Blocking these receptors with a 5-HT3 antagonist prevents that signaling, making ondansetron highly effective at reducing both the occurrence and severity of CINV, especially in the acute phase after chemotherapy. Scopolamine and meclizine are more helpful for motion sickness and vestibular-related nausea, not as targeted for the serotonin pathway involved in CINV. Loperamide treats diarrhea and doesn’t address nausea or vomiting. So ondansetron best controls chemotherapy-induced nausea and vomiting.

Chemotherapy-induced nausea and vomiting primarily arise from serotonin release in the gut that activates 5-HT3 receptors on vagal afferents, sending signals to the vomiting center. Blocking these receptors with a 5-HT3 antagonist prevents that signaling, making ondansetron highly effective at reducing both the occurrence and severity of CINV, especially in the acute phase after chemotherapy. Scopolamine and meclizine are more helpful for motion sickness and vestibular-related nausea, not as targeted for the serotonin pathway involved in CINV. Loperamide treats diarrhea and doesn’t address nausea or vomiting. So ondansetron best controls chemotherapy-induced nausea and vomiting.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy