Following induction of anesthesia with sufentanil and pancuronium, a patient with left main coronary artery disease has a decrease in blood pressure from 110/70 to 60/40 mmHg. There is no change in heart rate or ECG. The most appropriate management of the hypotension is administration of
(A) calcium chloride
(B) ephedrine
(C) epinephrine
(D) isoproterenol
(E) phenylephrine
E
Which of the following anesthetic techniques is most appropriate for a woman in the second stage of labor?
A 13-year-old African American boy has severe abdominal pain after debridement of an open fracture of the lower extremity. His hemoglobin concentration is 10 g/dl and a peripheral blood smear shows elongated crescent-shaped erythrocytes. The most appropriate initial therapy is
(A) sodium bicarbonate administration
(B) dopamine infusion
(C) blood transfusion
(D) volume loading with crystalloid
(E) high-dose corticosteroid administration
D
If minute ventilation is held constant, which of the following is LEAST likely to alter PaCO2?
A 32-year-old man is scheduled for hernia repair. He underwent heart transplantation for cardiomyopathy five years ago. Which of the following findings is most likely?
(A) Absence of coronary atherosclerosis
(B) Biventricular hypokinesis on echocardiography
(C) Down-regulation of cardiac beta-adrenergic receptors
A mechanically ventilated newborn infant is undergoing gastroschisis repair during halothane anesthesia. Based on the right radial artery catheter tracing shown, which of the following is the most appropriate conclusion?
(A) The abdomen has not yet been incised
(B) The anesthetic should be changed from halothane to isoflurane
In a healthy patient receiving an epidural analgesic infusion postoperatively, clear fluid is noted to drip back freely from the epidural catheter. Which of the following findings correctly identifies the associated fluid?
(A) Precipitation when mixed with an equal volume of pancuronium = local anesthetic