A 75-year-old man with aortic stenosis and coronary artery disease has a preinduction heart rate of 68 bpm and blood pressure of 125/70 mmHg. After induction of anesthesia with fentanyl, midazolam, and pancuronium, heart rate is 90 bpm and blood pressure is 85/45 mmHg. ECG shows a new ST-segment elevation in lead II. Which of the following is the most appropriate initial management?
Which of the following statements concerning the metabolism of atracurium is true?
Which of the following is most likely in a 30-year-old patient with untreated hypothyroidism?
Metoclopramide
A 40-year-old woman with Graves' disease is undergoing thyroidectomy with 1% isoflurane, 60% nitrous oxide, and oxygen. During surgical manipulation of the thyroid, temperature increases to 38.5°C, heart rate to 160 bpm, and blood pressure to 150/100 mmHg. The most appropriate initial treatment is to
A 15-year-old previously healthy boy is scheduled for a celiotomy to relieve an acute intestinal obstruction. A rapid sequence induction is used. Anesthesia is maintained with a balanced technique including nitrous oxide and oxygen (5L:2L), meperidine, and pancuronium. Because of abdominal distention and the high pressure required for inflation of the lungs, a nasogastric tube is inserted. The abdomen remains distended, but compliance improves dramatically. At this time the patient is cyanotic, PaO2 is 48 mmHg, PaCO2 is 52 mmHg, and pH is 7.29. Nitrous oxide is discontinued. The most important therapeutic measure is to
The most common early indication of drug dependence in an anesthesiologist is
For any given FiO2 and PaCO2, the PaO2 is lower in a healthy paralyzed patient anesthetized with isoflurane than in the same patient unanesthetized and breathing spontaneously. The primary cause of this difference is
Twelve hours after an uneventful hysterectomy with lidocaine epidural anesthesia, a 70-year-old woman has partial paralysis of the lower extremities. She is receiving morphine 0.5 mg/hr through an epidural catheter and is pain free. On examination, definite motor loss is noted in the lower extremities, but no other deficits are apparent. The most appropriate action at this time is to
A child undergoing general anesthesia is breathing spontaneously using the Jackson-Rees modification of the Ayres T-piece. Respiratory rate is 20/min and tidal volume is 75 ml. What is the minimum fresh gas flow required to prevent rebreathing?