Final answer:
The nurse's initial action should be to assess the patient's vital signs upon their arrival from the PACU.
Step-by-step explanation:
Upon the patient's arrival from the postanesthesia care unit (PACU) to the surgical floor, the nurse's initial action should be to assess the patient's vital signs. This includes checking the patient's blood pressure, heart rate, respiratory rate, and temperature. Assessing the patient's vital signs provides important information about their overall health and helps the nurse monitor for any signs of complications or changes in their condition.
Only after assessing the patient's vital signs and ensuring their stability, can the nurse move on to other tasks such as assessing the patient's pain, checking the rate of the IV infusion, and checking the physician's postoperative orders.