10 Random Questions

Regional & Pain

A 65-kg man is scheduled for wrist surgery with intravenous regional anesthesia with 0.5% lidocaine 50 ml. Which of the following statements is true?


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Compared with healthy persons, patients with myasthenic (Eaton-Lambert) syndrome have increased


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Cardiac

Which of the following best describes cardiomyopathy following therapy with doxorubicin (Adriamycin)?


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General Cardiac

A 63-year-old man with a history of congestive heart failure and left ventricular dilation is scheduled for carotid endarterectomy. During carotid cross-clamping, the surgeon requests that systolic blood pressure be increased from 100 to 160 mmHg. Compared with an identical patient with normal left ventricular size, what is the effect of this change in blood pressure on this patient's myocardial oxygen consumption?


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Equipment & Physics

During anesthesia using the Bain circuit


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Equipment & Physics

During anesthesia with nitrous oxide, oxygen, and a relaxant, the patient's lungs are being mechanically ventilated and there is a heated humidifier in the circuit. The most likely cause of an apparent increase in inspired oxygen concentration is


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OB

A parturient received 1000 ml of dextrose 5% in lactated Ringer's solution 20 minutes prior to delivery. Ten minutes later her blood glucose concentration is 580 mg/dl. In this situation


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With acute carbon monoxide poisoning


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Which of the following is characteristic of the pharmacokinetics of alfentanil?


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Pediatric

An infant becomes cyanotic and hypotensive after ventilatory pressures increase to 45 cm H2O during closure of the abdominal wall at the end of a gastroschisis repair. The most appropriate next step is to


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