A nurse is caring for a client who is postoperative and using a PCA pump. For which of the following actions should the nurse intervene?

A. The client administers a PCA dose as soon as their pain returns: This is an appropriate action because PCA pumps are designed for the client to self-administer medication when pain begins to recur, maintaining adequate control and preventing severe discomfort. B. The client is ambulating with the PCA pump: Ambulation with the PCA pump is acceptable as long as the pump is securely attached to an IV pole or portable stand and safety measures are followed. Mobility helps prevent postoperative complications such as deep vein thrombosis. C. The client administers a PCA dose prior to dressing changes: Administering a dose before a painful procedure helps achieve optimal pain control, ensuring the client is comfortable during care activities. D. The client requests their partner administer PCA doses while they sleep: The nurse should intervene because only the client should activate the PCA pump. Allowing another person to administer doses increases the risk of oversedation and respiratory depression, making this practice unsafe.