system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Following a gastric surgery, a 45-year-old woman complains of severe nausea and vomiting on the second post-operative day. On physical examination, her vitals are stable and examination of the abdomen reveals no significant abnormality. As she is already receiving an appropriate dosage of ondansetron, the surgeon adds metoclopramide to her treatment orders. Following addition of the drug, she experiences significant relief from nausea and vomiting. Which of the following mechanisms best explains the action of this drug?
assistant
Inhibition of dopamine receptors in the area postrema