A nurse is contributing to the plan of care for a client who is 24 hr postoperative following an aortic valve replacement with a biologic valve. Which of the following interventions should the nurse include in the plan?

A. Fluid balance is critical after valve replacement surgery. Monitoring daily weight helps detect fluid retention, which may indicate heart failure or poor cardiac function. B. Not indicated unless the client has a dangerously high fever. C. Required for clients on IV heparin or those with mechanical valves needing anticoagulation. Biologic valves usually do not require lifelong anticoagulation. D. Pain management is important but is a general postop intervention, not specific to aortic valve replacement.