Preoperative evaluation shows a serum sodium concentration of 140 mEq/L, serum chloride concentration of 90 mEq/L, PaCO2 of 46 mmHg, and arterial pH of 7.50. These findings are most indicative of prior treatment with
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 drugs is LEAST likely to cross the placenta?
A newborn infant is undergoing repair of gastroschisis. During closure of the abdominal wall, ventilatory pressures and central venous pressure increase markedly. The most appropriate management is to
(A) administer a bronchodilator
(B) decrease tidal volume and increase ventilatory rate
Evaluation of a postoperative neurologic deficit discloses inability to oppose the thumb and little finger, weakness of abduction of the thumb, and loss of flexion of the distal phalanx of the index finger. This problem is most likely related to
(A) paresthesia occurring during an interscalene brachial plexus block
(B) attempted radial artery cannulation at the wrist
(C) inadequate padding under the elbow
(D) attempted venipuncture in the antecubital fossa
(E) abduction of the upper humerus against an "ether screen"
During induction of anesthesia, a patient is breathing isoflurane from a semiclosed circle absorber system. The temperature-compensated vaporizer is set to deliver isoflurane 1.5%. Which of the following will result in the lowest inspired concentration of isoflurane?
(A) Doubling the length of circle system hoses
(B) Decreasing the barometric pressure
(C) Changing from rubber to plastic breathing hoses