The induction dose of thiopental should be decreased in each of the following situations EXCEPT
(A) age greater than 70 years
(B) cardiogenic shock
(C) decreased hepatic blood flow
(D) hypoalbuminemia
(E) hypothyroidism
C
A 28-year-old woman receives a lumbar epidural anesthetic for uncomplicated labor and delivery. During removal of the catheter, 1 cm breaks off and remains in her back. After informing the patient, the most appropriate management is
The initial reduction in core temperature during general anesthesia is caused by
(A) ablation of thermoregulatory vasoconstriction
(B) conductive heat loss
(C) evaporative heat loss in the respiratory tract
(D) neuromuscular blockade
(E) redistribution of heat from the core to the periphery
E
During induction of anesthesia for cesarean delivery, pancuronium is inadvertently substituted for succinylcholine. The neonate shows no clinical signs of muscle relaxation because pancuronium is
A 60-year-old man undergoing resection of an abdominal aortic aneurysm has an increase in measured mixed venous oxygen saturation from 70% to 90%. Which of the following is the most likely cause?
(A) Decreased cardiac output
(B) Decreased hematocrit
(C) Intrapulmonary shunting
(D) Right to left shunting at the atrial level
(E) Wedging of the pulmonary artery catheter
E
A patient has a seizure within seconds after receiving a retrobulbar injection of 0.5% bupivacaine with epinephrine 1:200,000. Which of the following is the most likely cause?
A patient has severe pain after total knee arthroplasty. Systemic opioids are most likely to modify the pain through action at which of the following sites?