A nurse is caring for a client who is postoperative immediately following a cardiac catheterization with a right femoral approach. Which of the following actions should the nurse take?

Rationale: A. Assess the client's peripheral pulses every 15 min: Frequent assessment of peripheral pulses is essential to monitor for signs of arterial obstruction, bleeding, or hematoma formation at the femoral site. This helps ensure adequate perfusion and detect complications early. B. Elevate the head of the client's bed to 45°: After femoral catheterization, the head of the bed should be elevated no more than 30° to reduce pressure at the puncture site and prevent bleeding. A 45° angle may increase the risk of hemorrhage. C. Change the client's dressing 4 hr following the procedure: The dressing should remain in place and be monitored for signs of bleeding or saturation. Routine dressing changes shortly after the procedure are not recommended unless soiled or ordered. D. Instruct the client to flex the right knee every 30 min: Flexing the leg increases the risk of dislodging the clot or reopening the arterial puncture site. The affected leg should remain straight and immobilized for several hours post-procedure.