10 Random Questions


DC shocks of 200 joules applied directly to the heart are likely to

ADVANCED General

Statistical analysis of 20 patients shows a mean cardiac output (CO) of 5 L/min with a standard deviation of 1 L/min. The distribution pattern in the sample population is normal. Which of the following is the most appropriate conclusion?

BASIC General

A 5-year-old boy is to undergo microlaryngeal carbon dioxide laser vaporization of laryngotracheal papillomas under halothane administered through a small polyvinylchloride (PVC) endotracheal tube. The diluent gas mixture LEAST likely to support laser combustion of the PVC tube is

ADVANCED Equipment & Physics Pediatric

Which of the following is a sign of cyanide toxicity during nitroprusside therapy?

BASIC Pharmacology & Pharmacokinetics

A 62-year-old man, who had a myocardial infarction three years ago, complicated by congestive heart failure and renal failure, is undergoing a colectomy. A pulmonary artery catheter demonstrates a cardiac output higher than measurements recorded during a cardiac catheterization two months after the infarction. Which of the following most likely contributes to the increased cardiac output?

ADVANCED Cardiac

Which of the following differentiates midazolam from diazepam administered intravenously in equipotent doses?


A patient with lumbar disk disease requires lumbar epidural injection of a corticosteroid for control of low back pain. Which of the following statements concerning this treatment is true?

ADVANCED Regional & Pain

Volume-cycled flow generators are preferred over pressure-cycled ventilators in critical care units because they


Following axillary block for insertion of an arteriovenous fistula in the forearm, a patient has pain on surgical incision. Which of the following nerves should be blocked to relieve this pain?

ADVANCED Regional & Pain

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