Final answer:
The nurse needs to follow up on the client's statement about not receiving medications, which is critical for postoperative care and falls under the direct supervision responsibilities of a registered nurse.
Step-by-step explanation:
The statement by the client that requires the nurse to follow up with the PN is: "I have not received any of my medications today." This indicates a potential lapse in medication administration, which is a critical aspect of patient care, particularly in the postoperative period where medications can be crucial for pain management, infection prevention, and aiding in the recovery process. The responsibility of providing postoperative care often includes direct supervision by a registered nurse, making sure that a patient's medication regimen is followed correctly. It is essential for the nurse to intervene and address this issue promptly to ensure the safety and well-being of the client.