Which of the following is most indicative of reflex sympathetic dystrophy?
A 70-year-old man who underwent bilateral carotid endarterectomies two years ago is to undergo anesthesia and surgery. The denervation of the carotid bodies is likely to result in
During general anesthesia with spontaneous ventilation, a patient has a VD/VT of 0.5. Which of the following is most likely to decrease the ratio?
During controlled ventilation, which of the following will cause an increase in end-tidal carbon dioxide tension with a normal waveform on the capnograph?
If minute ventilation remains constant, a decrease in end-expiratory carbon dioxide concentration will occur with
During isoflurane anesthesia, a 45-year-old patient with chronic asthma has wheezing, prolonged expiration, sinus tachycardia of 120 bpm, and premature ventricular contractions. Preoperative medication included cromolyn and theophylline (serum level 20 jag/ml). The most appropriate treatment is to administer
A 20-year-old man with a history of substance abuse is undergoing preoperative evaluation. Which of the following findings suggests current use of cocaine?
A 27-year-old man with type I von Willebrand's disease requires internal fixation of an open fracture of the femur. Prothrombin time, partial thromboplastin time, and platelet count are normal. During surgery, there is significant oozing from the wound and the surgeon notes poor clot quality. The most appropriate therapy at this time is administration of
Which of the following is a potentially beneficial effect of ketamine used for induction of anesthesia?
A normotensive 66-year-old man undergoes total hip arthroplasty. Mean arterial pressure is maintained at 60 mmHg with isoflurane and labetalol; intraoperative FiO2 is 1.0. Eight units of red blood cells are administered intraoperatively because of an injury to the femoral artery. Five days later, the patient develops jaundice. Which of the following is the most likely cause of the jaundice?