Final answer:
The nurse's priority action when a patient arrives at the medical-surgical floor from the postoperative unit is to assess the patient's vital signs. This initial assessment provides vital information for the continuing care and management of the patient.
Step-by-step explanation:
When the nurse receives a patient from the postoperative unit being transferred to the medical-surgical floor, the priority action that should be performed immediately is to assess the patient's vital signs (C). This ensures that the nurse has the most current information on the patient's physiological status, which is essential for providing safe and effective care. Patient identity confirmation (A) would likely have been checked before the transfer, a handover report (B) is essential but secondary to patient assessment, and administering pain medication (D) should only occur after assessing the need for it—typically through checking vitals and pain scores.
It is critical during the transfer of care that the following steps are reaffirmed: the patient's identity, surgical site, and procedure; all team members are introduced; and any allergies or other key patient concerns are communicated. Additionally, any potential risks of aspiration or equipment needs are addressed to ensure patient safety and smooth continuing care.