单选题 The physician orders a tricyclic antidepressant for a client who has suffered an acute myocardial infarction (MI) within the past 6 months. The nurse should take which of the following actions?
A. Administer the medication as ordered.
B. Discontinue the medication.
C. Question the order with the physician.
D. Inform the client that he should discuss the MI with the physician.

【正确答案】 C

【答案解析】Cardiovascular toxicity is a problem with tricyclic antidepressants, and the nurse should question their use in a client with cardiac disease. Administering the medication would be an act of negligence. A nurse can't discontinue a medication without a physician's order. It's the nurse's responsibility, not the client's, to discuss questions of care with the physician.