Alveolar stability at varying lung volumes is maintained by
Intraoperatively, the occurrence of prominent "a" waves on the central venous pressure waveform can be explained by each of the following EXCEPT
A 66-year-old patient with aortic stenosis is scheduled for aortic valve replacement. Examination shows blood pressure of 110/60 mmHg and sinus rhythm at a rate of 75 bpm. Pulmonary artery occlusion pressure (PAOP) is 20 mmHg with a prominent a-wave on the tracing. Which of the following is the most appropriate management?
During induction of anesthesia for cesarean delivery, pancuronium is inadvertently substituted for succinylcholine. The neonate shows no clinical signs of muscle relaxation because pancuronium is
A 50-year-old man is scheduled to undergo emergency craniotomy for evacuation of an epidural hematoma. His Glasgow Coma Scale score is 6; heart rate is 54 bpm, and blood pressure is 190/110 mmHg. The most appropriate initial management is administration of which of the following agents?
A 26-year-old man who sustained multiple trauma undergoes open reduction and internal fixation of bilateral tibial-fibular fractures during anesthesia with isoflurane. nitrous oxide, and oxygen with positive pressure ventilation. During the procedure, the patient has sudden onset of hypotension, jugular venous distention, deviation of the trachea to the right, and decreased ventilatory compliance. Isoflurane is discontinued and 100% oxygen is administered. Which of the following is the most appropriate next step in management?
A 25-year-old man requires exploratory laparotomy following a motor vehicle accident. He is acutely intoxicated with alcohol. Which of the following is the most likely result of the alcohol ingestion?
A 72-year-old man has massive venous hemorrhage during a radical prostatectomy. Blood pressure decreases from 110/60 to 75/30 mmHg and central venous pressure decreases from 12 to 4 mmHg. PetC02 decreases from 34 to 24 mmHg during constant minute ventilation. The most appropriate next step should be to
Which of the following opioids is vagolytic?
A 100-kg, 42-year-old woman received enflurane and oxygen for clipping of an intracranial aneurysm lasting eight hours. In the first two postoperative hours, urine output is 2 liters. Serum sodium concentration is 152 mEq/L. Urine osmolality and central venous pressure are low. Which of the following is best used to establish the diagnosis?