For which adverse effect should a nurse monitor a client prescribed metoclopramide?

Metoclopramide is primarily used as an antiemetic and gastroprokinetic agent. One of the notable adverse effects associated with this medication is sedation. This sedative effect occurs because metoclopramide can cross the blood-brain barrier and affect the central nervous system. Therefore, when a client is prescribed metoclopramide, the nurse should closely monitor for signs of sedation, which may include drowsiness, lethargy, and decreased alertness.

The other adverse effects listed—muscle weakness, tinnitus, and peripheral edema—are not commonly linked to metoclopramide. Therefore, monitoring for sedation is crucial to ensure patient safety and effective management of the medication's side effects.