A 70-kg patient is anesthetized for a craniotomy in the sitting position. Minute ventilation through a circle system is 15 L/min; PetC02 is 65 mmHg. Which of the following is the most likely cause of the increased PetC02?
A 67-kg, 52-year-old man is undergoing heart transplantation. After implantation of the donor heart and discontinuation of cardiopulmonary bypass, isoproterenol is administered intravenously to maintain heart rate greater than 100 bpm. During the next 10 minutes, blood pressure decreases from 105/55 mmHg to 75/40 mmHg. Heart rate is 102 bpm and cardiac output is 5.8 L/min. The most appropriate management is administration of
Oxygen 100 ml/min is bubbled through a vaporizer containing an anesthetic with a vapor pressure of 150 mmHg, and this mixture is added to a fresh gas flow of 5 L/min. The delivered anesthetic concentration is
A 45-year-old woman with mitral stenosis is scheduled for elective mitral valve replacement. Two minutes after tracheal intubation, she develops atrial fibrillation with a ventricular response rate of 150 bpm and a decrease in blood pressure to 75/45 mmHg. Which of the following is the most appropriate first step in management?
A patient develops urticaria and pruritus while receiving a blood transfusion in the PACU. Blood pressure and heart rate are unchanged from pretransfusion values. The most appropriate action is administration of
Pain and spasm due to injury of the deltoid muscle is most effectively relieved by
A 50-year-old patient undergoes subtotal thyroidectomy for Graves' disease. In the immediate postoperative period, he has marked hoarseness but no stridor. The most likely cause of the hoarseness is trauma to the
A 19-year-old woman has severe nausea and vomiting following laparoscopy. After intramuscular administration of prochlorperazine 10 mg, she has muscle spasms in the face, neck, and tongue. Which of the following is the most appropriate management?
The jet ventilation technique using an injector during laryngobronchoscopy relies on
High positive end-expiratory pressure can result in each of the following EXCEPT