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?

A. Instruct the client to flex the right knee every 30 min: After a femoral cardiac catheterization, the affected leg should remain straight to prevent bleeding or hematoma formation. Flexing the knee could disrupt hemostasis at the insertion site. B. Assess the client's peripheral pulses every 15 min: Frequent monitoring of peripheral pulses ensures early detection of vascular complications such as thrombosis, occlusion, or impaired circulation in the affected limb. C. Change the client's dressing 4 hr following the procedure: The initial dressing is typically left intact for several hours or until bleeding is controlled. Early dressing changes are unnecessary and may increase infection risk. D. Elevate the head of the client's bed to 45°: Elevating the head of the bed can increase pressure on the femoral insertion site and risk bleeding. The client’s bed is usually kept flat or slightly elevated according to provider orders until hemostasis is confirmed.