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?

Elevate the head of the client's bed to 45°.

Change the client's dressing 4 hr following the procedure.

Assess the client's peripheral pulses every 15 min.

Instruct the client to flex the right knee every 30 min.