Following the administration of 4 MAC hours of enflurane, peak serum concentrations of inorganic fluoride are highest in patients who
(A) are physically dependent on barbiturates
(B) are taking isoniazid chronically to suppress tuberculosis
(C) are epileptics taking phenytoin chronically
(D) are obese
(E) consume alcohol regularly
B
A 65-year-old man has a history of alcohol abuse. Which of the following preoperative serum concentrations would provide the best assessment of synthetic hepatic function?
A 95-kg, 65-year-old woman receives sevoflurane and pancuronium during a laparoscopic cholecystectomy. Three minutes after administration of neostigmine 5 mg and atropine 1.2 mg, the twitch height returns to normal. Spontaneous tidal volume is 500 ml when the endotracheal tube is removed. In the PACU she reports dyspnea and appears distressed. Which of the following is the most likely cause of the respiratory distress?
A comatose 40-year-old man is to undergo evacuation of an acute subdural hematoma. His left pupil is dilated and blood is present behind the left tympanic membrane. Each of the following is an acceptable intervention EXCEPT
(A) application of 5 cm H20 positive end-expiratory pressure
(B) blind nasotracheal intubation
(C) use of isoflurane
(D) use of nitrous oxide
(E) use of succinylcholine
B
Compared with the adult airway, the airway of an infant is characterized by
During a right lower lobe resection, SpO2 decreases from 99% to 70% after institution of one-lung ventilation. FiO2 is 1.0. The most appropriate management is to
(A) administer an inhaled bronchodilator
(B) apply continuous positive airway pressure to the right lung
(C) apply positive end-expiratory pressure to the left lung