单选题 A client with a forceful, pounding heartbeat is diagnosed with mitral valve prolapse. This client should avoid which of the following?
A. High volumes of fluid intake.
B. Aerobic exercise programs.
C. Caffeine-containing products.
D. Foods rich in protein.

【正确答案】 C

【答案解析】Caffeine is a stimulant, which can exacerbate palpitations and should be avoided by a client with symptomatic mitral valve prolapse. High-fluid intake helps maintain adequate preload and cardiac output. Aerobic exercise helps increase cardiac output and decrease heart rate. Protein-rich foods aren't restricted but high-calorie foods are.