The MAC of a volatile anesthetic agent is greatest when administered to which of the following groups of healthy patients?
A 57-year-old man has back pain, a heart rate of 90 bpm, decreased pulse in the left arm, and blood pressure of 200/110 mmHg. During infusion of nitroprusside, heart rate increases to 115 bpm and blood pressure decreases to 140/80 mmHg. The most appropriate management at this time is administration of
Which of the following best describes the relationship between cerebral perfusion pressure and cerebral blood flow in a patient with untreated chronic hypertension?
Which of the following is a side effect of beta-adrenergic blockade?
A 70-kg 58-year-old man with unstable angina is scheduled to undergo coronary artery bypass grafting. Intravenous heparin and nitroglycerin are administered for four days before surgery. Before initiating cardiopulmonary bypass, 21,000 units of heparin are administered through the central venous catheter; five minutes later, activated clotting time is 280 seconds. Which of the following is the most appropriate next step in management?
A 30-year-old woman undergoes thyroidectomy under general endotracheal anesthesia. Immediately after extubation while breathing spontaneously, she has laryngospasm that resolves after 60 seconds of continuous positive airway pressure applied by face mask. In the PACU, she develops shortness of breath, tachypnea, hypoxemia, and rales. Which of the following is the most likely diagnosis?
The EEG of a patient undergoing anesthesia with high-dose fentanyl would most likely show
The metabolism of which of the following hypotensive agents is most likely to be affected in patients with severe renal disease?
Compared with thiopental, methohexital is characterized by
A patient with a fasting blood glucose concentration of 100 mg/dl undergoes a four-hour operation under general anesthesia without intraoperative administration of glucose. On emergence the most likely finding will be