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 woman with chronic obstructive pulmonary disease is extubated and minimally responsive after isoflurane anesthesia. She is receiving oxygen 6 L/min through a face mask. Respirations are 10/min, PaO2 is 68 mmHg, PaCO2 is 54 mmHg, and pH is 7.28. The most likely cause of the respiratory acidemia is
Each of the following is an adverse effect of intranasal administration of cocaine prior to nasotracheal intubation EXCEPT
A 64-year-old patient with chronic obstructive pulmonary disease sustained fractures of ribs 4 through 8 on the left one hour ago. Examination shows agitation, heart rate of 120 bpm, respiratory rate of 30/min, and blood pressure of 180/100 mmHg. PaO2 is 70 mmHg and PaCO2 is 35 mmHg on room air. Radiographs of the chest show no abnormalities. Which of the following is the most appropriate immediate management?
An 8-kg, 5-month-old infant undergoes craniotomy for an arteriovenous malformation. During the procedure, severe hemorrhaging occurs and packed red blood cells 3 units are transfused rapidly. During infusion of the third unit, hypotension, nodal bigeminy, and prolongation of the QT interval are noted. The most appropriate management includes administration of
A 21-year-old athlete has laryngospasm following extubation after undergoing repair of an inguinal hernia during general anesthesia. Bag and mask ventilation relieves the patient's symptoms. In the PACU 15 minutes later, he has dyspnea; Sp02 is 85% at an Fl02 of .40. Which of the following is the most likely cause?
Which of the following changes in pulmonary function best explains the more rapid rate of rise of alveolar concentration of volatile anesthetics in pregnant women than in nonpregnant women?
Which of the following statements concerning the use of epidural anesthesia for extracorporeal shock wave lithotripsy is true?
A 68-year-old woman who is receiving urokinase for deep venous thrombosis and pulmonary emboli requires emergency laparotomy for a bleeding gastric ulcer. Which of the following agents is most appropriate to reverse the effects of urokinase?
Which of the following statements concerning the ventilatory effects of inhalational anesthesia is true?