10 Random Questions


A 70-kg 61-year-old patient undergoes a four-hour resection of an abdominal aortic aneurysm during anesthesia with fentanyl and enflurane. Infrarenal clamping is required during the procedure. Twelve hours after the procedure, urine output is 15 ml/hr with a fractional sodium excretion of 6%. Which of the following is the most likely cause?

ADVANCED General

A 62-year-old man is in the intensive care unit after successful craniotomy for excision of a meningioma. Blood volume is normal; laboratory studies show serum sodium concentration of 120 mEq/L, serum osmolality of 260 mOsm/L, urine sodium concentration of 50 mEq/L, and urine osmolality of 820 mOsm/L. Which of the following is the most likely explanation?

ADVANCED Neuro

Following delivery with pudendal block, a patient requires anesthesia for removal of a retained placenta. The most appropriate anesthetic is

ADVANCED OB

Which of the following will most closely mimic the effects of stellate ganglion block?

ADVANCED Regional & Pain

A patient receiving monoamine oxidase inhibitor therapy for depression undergoes an emergency cholecystectomy. Which of the following is the best means of providing postoperative analgesia in this patient?

ADVANCED Pharmacology & Pharmacokinetics Regional & Pain

A 75-year-old man is confused, restless, and disoriented two days after an aortic aneurysm repair. Serum sodium concentration is 112 mEq/L, serum osmolality is low, and urine is hypertonic. The most appropriate treatment is


During insertion of a Harrington rod with deliberate hypotension for correction of spinal scoliosis, accurate interpretation of somatosensory evoked potentials requires


During exploration of the posterior fossa with the patient in the sitting position, blood pressure decreases from 120/70 to 70/40 mmHg, central venous pressure increases from 6 to 16 mmHg, oxygen saturation decreases to 88%, nitrogen is detected by the mass spectrometer, and premature ventricular contractions appear on the ECG. The most appropriate management is to


A 2.8-kg 8-hour-old infant undergoes laparotomy for a ruptured omphalocele. Following primary closure of the abdominal wall, arterial blood gases are PaO2 40 mmHg (FiO2 0.6), PaCO2 55 mmHg, and pH 7.1. Blood pressure is 30/20 mmHg. After increasing the FiO2, the most appropriate action would be to

ADVANCED Pediatric

Preoperative administration of alpha-adrenergic inhibitors will usually reverse ECG changes due to