10 Random Questions

The most important cause of hypotension that occurs normally at initiation of cardiopulmonary bypass is


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Neuro  

Which of the following can be used as a sole criterion for brain death?


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OB  

A 26-year-old woman has headache, nausea, and photophobia 36 hours after cesarean delivery for chorioamnionitis using subarachnoid block. Temperature is 38.8°C and leukocyte count is 14,200/mm3. Which of the following is the most appropriate next step in management?


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Cardiac  

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?


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Pediatric  

Which of the following is true of both the neonatal and adult airways?


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General  

Preoperative administration of an alpha-adrenergic blocker for 10 days to patients with pheochromocytoma will decrease


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Eight hours after abdominal surgery, a 51-year-old patient becomes increasingly somnolent. Epidural morphine 5 mg was administered immediately following the procedure. Postoperatively, respiratory rate has not decreased below 12/min and Sp02 has remained greater than 92%. Arterial blood gas analysis shows Pa02 80 mmHg, PaC02 82 mmHg, and pH 7.1. Which of the following is the most appropriate conclusion?


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General  

Which of the following is an effect of magnesium sulfate at the neuromuscular junction?


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Pediatric  

A 2500-g, 12-hour-old infant is tracheally intubated and mechanically ventilated at a rate of 20/min with an FiO2 of 0.4 and peak inspiratory pressure of 25 cmH2O. At birth, amniotic fluid was meconium stained and Apgar scores were 2 and 7. The most recent arterial blood gas levels are PaO2, 50 mmHg, PaCO2, 55 mmHg, and pH 7.20. The most appropriate management is to


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General  

During anesthesia with nitrous oxide and isoflurane in a 70-kg, 25-year-old patient, airway resistance would be decreased by


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