10 Random Questions


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?

BASIC Pharmacology & Pharmacokinetics

A healthy, 18-year-old, 65-kg woman undergoing diagnostic laparoscopy is being monitored with a properly functioning and calibrated capnograph. The end-tidal carbon dioxide concentration is 6%, and the inspired carbon dioxide concentration is 1%. This may be caused by each of the following EXCEPT

BASIC Equipment & Physics

When the inspired gas is changed from air to 20% oxygen and 80% nitrous oxide, PaO2 increases because

BASIC Pharmacology & Pharmacokinetics

Compared with epidural administration of hydrophilic opioids, epidural administration of lipophilic opioids is associated with

ADVANCED Pharmacology & Pharmacokinetics Regional & Pain

The flow-volume loop indicated by the "X" is characteristic of

BASIC Respiratory & Critical Care

The left ventricular function curve is from a young, healthy patient. If X represents the patient's myocardial function prior to anesthesia, the effect of 1 MAC of isoflurane at normocarbia is best represented by which of the following positions?


A woman has weakness of the right quadriceps and a decreased knee jerk reflex on the right one day after forceps delivery under epidural anesthesia. The most likely cause is

ADVANCED OB Regional & Pain

A newborn infant is undergoing repair of gastroschisis. During closure of the abdominal wall, ventilatory pressures and central venous pressure increase markedly. The most appropriate management is to

ADVANCED Pediatric

Two hours after a colon resection, a 60-year-old woman with adult-onset diabetes mellitus is somnolent and has a blood glucose concentration of 612 mg/dl. Which of the following findings are most likely? (Sodium, Osmolality, Intravascular volume)


A patient is placed in the prone jackknife position for lumbar subarachnoid injection of tetracaine 10 mg in 10 ml of preservative-free sterile water. Which of the following results is most likely?

ADVANCED Regional & Pain