During a cardiac arrest with effective chest compression and positive-pressure ventilation, 50 mEq of sodium bicarbonate is administered. Which of the following is the most likely result?
A full-term neonate has physical findings suggestive of congenital diaphragmatic hernia. Initial Apgar score is 2. Which of the following is the most appropriate initial management?
(A) Placement of an orogastric tube
(B) Insertion of a chest tube
(C) Controlled ventilation by face mask
(D) Controlled ventilation through an endotracheal tube
(E) Spontaneous ventilation through an endotracheal tube
A 60-year-old woman who is taking propranolol for hypertension and is allergic to penicillin is anesthetized with thiopental and halothane for resection of an abdominal aortic aneurysm. Shortly after intubation she is given vancomycin 500 mg intravenously, after which her blood pressure decreases from 140/80 to 70/50 mmHg while her heart rate remains steady at 64 bpm. The most likely explanation for the decrease in blood pressure is
(A) cross-sensitivity of penicillin and vancomycin
(B) interaction of vancomycin and propranolol
(C) vancomycin-induced anaphylactoid reaction
(D) interaction of halothane and propranolol
(E) interaction of halothane and vancomycin
C
Which of the following statements concerning air embolism during intracranial operations is true?
(A) It does not occur in supine patients
(B) It is prevented by positive end-expiratory pressure
(C) It is confined to the right side of the heart and the pulmonary vasculature
(D) It is detectable by measurement of end-tidal nitrogen
(E) It is most efficiently treated by aspiration from a pulmonary artery catheter
A 64-year-old man with diabetes mellitus well controlled with NPH insulin undergoes lower extremity revascularization. Following administration of protamine 10 mg, the patient has facial flushing and blood pressure of 60/30 mmHg. The most appropriate initial step in management is administration of which of the following drugs?