单选题 After cancer chemotherapy, a client develops nausea and vomiting. For this client, the nurse should give the highest priority to which action in the plan of care

A、 Serve small portions of bland food.
B、 Encourage rhythmic breathing exercise.
C、 Administer metoclopramide (Reglan) and dexamethasone (Decadron) as prescribed.
D、 Withhold fluids for the first 4 to 6 hours after chemotherapy administration.

【正确答案】 C

【答案解析】Administration of an antiemetic, such as metoclopramide, and an anti-inflammatory, such as dexamethasone, can reduce the severity of chemotherapy-induced nausea and vomiting. This in turn, helps prevent dehydration, a common complication of chemotherapy. The remaining options are unlikely to be as successful' in achieving this outcome.