Nine months after sustaining an injury to the left forearm, a 30-year-old woman has diffuse, burning pain on the anterior aspect of the forearm and posterior aspect of the hand and discoloration of the skin in the affected areas. The patient should be informed that
(A) if left untreated, muscle atrophy may develop in the involved limb
(B) if left untreated, the pain will remain well localized
(C) physical therapy is not indicated
(D) the symptoms are directly related to the severity of the initial injury
(E) the symptoms are most likely secondary to underlying peripheral vascular disease
During a craniotomy for a supratentorial tumor, a 28-year-old man receives isoflurane 0.75% in nitrous oxide 70% and oxygen. Ventilation is controlled to maintain PaCO2 at 25 mmHg. Nasopharyngeal temperature is 35.8°C. While the dura mater is open, the surgeon complains that the brain is bulging. The most appropriate management at this time is to
(A) decrease the inspired isoflurane concentration to 0.5%
(B) hyperventilate further to decrease PaCO2 to 20 mmHg
A patient being mechanically ventilated in the ICU requires wound debridement twice daily. Each of the following agents would be appropriate for induction of brief general anesthesia EXCEPT
A 67-kg, 52-year-old man is undergoing heart transplantation. After implantation of the donor heart and discontinuation of cardiopulmonary bypass, isoproterenol is administered intravenously to maintain heart rate greater than 100 bpm. During the next 10 minutes, blood pressure decreases from 105/55 mmHg to 75/40 mmHg. Heart rate is 102 bpm and cardiac output is 5.8 L/min. The most appropriate management is administration of