A client is 16 hours postoperative from total hip arthroplasty and reports numbness in the affected leg. What should the nurse do first?

In this scenario, assessing capillary refill in the toes bilaterally is the most critical action to take first. This procedure allows the nurse to evaluate the perfusion and circulation to the affected leg. Numbness can be a sign of compromised blood flow or nerve injury, which are significant concerns following a surgical procedure like total hip arthroplasty.

By comparing capillary refill on both extremities, the nurse can identify any differences that might indicate a potential problem, such as impaired circulation or neurological issues, which require immediate attention. If the capillary refill time is delayed or significantly different from the other leg, it signals the need for further assessments or urgent interventions.

While administering pain medication, contacting the physician, or checking vital signs are also important in the postoperative period, they do not address the immediate concern of assessing the patient's circulation and nerve function. Ensuring adequate blood flow is paramount, as untreated compromised circulation can lead to severe complications. Thus, assessing capillary refill in the toes is the priority in this situation.