Final answer:
The appropriate nursing intervention for a client 4 hours postoperative AAA repair is to assess the client's bilateral pedal pulses, to ensure proper blood flow to the lower extremities.
Step-by-step explanation:
The nursing intervention that should be implemented for a client who is 4 hours postoperative abdominal aortic aneurysm (AAA) repair is b. Assess the client's bilateral pedal pulses. This is important to ensure the graft is not occluded and blood is perfusing to the lower extremities. Ambulating the client (option a) might not be safe this early postoperative. A continuous IV heparin drip (option c) would not be administered without specific orders, as it can increase the risk of bleeding postoperatively. Providing a clear liquid diet (option d) is not a priority in relation to monitoring circulation to the limbs.