A patient with end-stage renal disease has prolonged ventilatory depression after administration of morphine. The most likely cause is increased
A 30-year-old, 70-kg woman with mitral stenosis is scheduled for elective laparoscopic sterilization. Preoperatively she is taking digoxin and an unknown medication for chronic mental depression. The EKG demonstrates atrial fibrillation. Heart rate is 68 bpm. Anesthesia is induced with thiopental followed by nitrous oxide 50%, halothane 0.75%, and a continuous succinylcholine infusion. The ventilator is set to deliver a minute volume of 5 liters through an endotracheal tube. As the carbon dioxide is being insufflated into the abdomen, the blood pressure is noted to be elevated (150/100 mmHg) and ventricular bigeminy is present. The most appropriate therapy is to
Intraoperatively, the occurrence of prominent "a" waves on the central venous pressure waveform can be explained by each of the following EXCEPT
A 50-year-old man with alcoholism and jaundice is scheduled to undergo umbilical herniorrhaphy. An increase in which of the following best indicates impaired synthetic hepatic function?
The arterial waveform and EKG shown are from a 60-year-old man with uremia who is the PACU after hip surgery under general anesthesia. The patient is drowsy, extubated, and breathing easily. The most likely diagnosis is
Arterial pressure in the radial artery is 155/70 mmHg measured by a correctly calibrated catheter-transducer system. At the same time, aortic pressure is 140/75 mmHg using a high-fidelity catheter tip transducer. The most likely cause of this discrepancy is
A computer program for hemodynamic calculations has the following input values: body surface area, arterial blood pressure, heart rate, pulmonary artery occlusion pressure, pulmonary artery pressure, and cardiac output. Each of the following values can be derived with this program EXCEPT
A healthy patient is receiving general endotracheal anesthesia with nitrous oxide 4 L/min, oxygen 2 L/min, and isoflurane 1% with spontaneous ventilation. The inspiratory breathing hose becomes disconnected from the inspiratory valve. The earliest alarm will be produced by
A 27-year-old man with chronic renal failure is to undergo revision of an arteriovenous graft. He insists on general anesthesia. Hemodialysis was completed two hours ago, and serum potassium concentration is now 5 mEq/L. Which of the following statements concerning anesthetic management of this patient is true?
The patient whose flow-volume loop is shown on the right most likely has