PACU questions with correct answers

When comparing desflurane and sevoflurane anesthesia at 1 MAC, which of the following parameters is most likely to be the same or similar following discontinuation of the anesthetic? - Answer time to orientation to person, place, time Which of the following tests reliably predicts recovery of airway reflexes? - Answer none of the above A. a negative inspiratory pressure of 25 cmH2O or less B. sustained head lift for 10seconds C. return of train-of-four response to preoperative levels Which of the following is the LEAST likely cause of postoperative hypoxia? - Answer hypothermia You are caring for a 25-year-old otherwise healthy patient in the PACU who is currently breathing room air with an oxygen saturation of 85%. A blood gas study reveals an arterial PO2 of 55 mm Hg and an arterial PCO2 of 70 mm Hg. Which of the following is the most likely cause of this patient's hypoxemia? - Answer hypoventilation A 56-year-old woman undergoes a cystectomy under general anesthesia using 70% nitrous oxide, 29% oxygen, and 1% isoflurane. Within minutes of emergence, she is transported to the postanesthesia care unit (PACU) spontaneously ventilating with oxygen by face mask; however, the anesthesiologist does not realize that the oxygen tank is empty. Vital signs on arrival to