A 14-month-old child has tetralogy of Fallot with dynamic obstruction to right ventricular outflow. Which of the following is most likely to decrease cyanosis in this child?
An obese, 35-year-old man had an episode of coughing followed by vomiting during induction of anesthesia for arthroscopy of the left knee. Intense wheezing developed bilaterally over five minutes. PaO2 is 60 mmHg, PaCO2 is 42 mmHg, and pH is 7.35. Optimal management following intubation of the trachea includes
(A) mechanical ventilation with positive end-expiratory pressure (PEEP), cancellation of surgery, and transfer to the intensive care unit
(B) saline lavage and continuation of surgery using halothane anesthesia
(C) cancellation of surgery and administration of corticosteroids and antibiotics
(D) thorough suctioning and proceeding with halothane anesthesia
(E) cancellation of surgery, vigorous mechanical ventilation, thorough suctioning, and administration of aminophylline
A patient who is scheduled for a parathyroidectomy for a parathyroid adenoma has a preoperative serum calcium concentration of 13.5 mg/dl. The ECG shows no acute changes. The most appropriate preoperative management is administration of
(A) calcitonin
(B) hydrocortisone
(C) intravenous saline solution
(D) mannitol
(E) potassium phosphate
C
Which of the following combinations of anesthetic and incorrect vaporizer results in the smallest error in delivered concentration?