A postoperative client is unable to ambulate. Which action should the nurse take to promote venous return?

Maintaining the sequential compression device (SCD) is an effective way to promote venous return, especially in a postoperative client who is unable to ambulate. SCDs work by using pneumatic technology to apply intermittent pressure to the legs, which mimics the natural muscle contractions that occur during movement. This action aids in preventing blood stagnation in the lower extremities, reduces the risk of venous thrombosis, and enhances venous return to the heart.

While other interventions can also contribute positively to venous return, they may not be as immediately effective or practical given the context of a postoperative client who is unable to move. Encouraging leg exercises, for example, relies on the client’s ability to participate actively, which isn't possible in this scenario. Changing the client's position frequently can help, but without effective compression, it may not be sufficient on its own to stimulate venous return. Administering anticoagulants can help in preventing thrombus formation but does not directly enhance the mechanistic return of blood flow as the SCD does.

Therefore, maintaining the SCD is a focused and effective approach to address the specific need for promoting venous return in this situation.