A patient with a fasting blood glucose concentration of 100 mg/dL undergoes a four-hour operation under general anesthesia without intraoperative administration of glucose. On emergence the most likely finding will be
A 46-year-old patient who abuses intravenous drugs develops acute aortic valvular insufficiency from bacterial endocarditis. Which of the following statements concerning pressures measured through a pulmonary artery catheter is true?
(A) Pulmonary artery occlusion pressure will underestimate left ventricular end-diastolic pressure
Which of the following statements concerning nalbuphine is true?
(A) It causes partial reversal of morphine-induced ventilatory depression
(B) Analgesia is partially mediated by delta receptor agonism
(C) Its antagonist effects are mediated at kappa receptors
(D) Duration of action is significantly shorter than that of morphine
(E) Ventilatory drive is not depressed
A
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?
During insufflation of the peritoneal cavity with carbon dioxide at the start of laparoscopy, heart rate increases to 140 bpm, blood pressure decreases to 70/40 mmHg, and a loud murmur is heard through the esophageal stethoscope. The most appropriate immediate step is to
A 65-kg 70-year-old man in the PACU is breathing spontaneously at 20/min through an endotracheal tube connected to a T-piece with a fresh gas flow of 5 L/min. He has a tidal volume of 350 mL and an FiO2 of 0.5. SpO2 decreases from 98% to 84% over one hour, then improves to 92% with an FiO2 of 1.0. Which of the following is the most likely cause of the hypoxemia?
(A) Decreased functional residual capacity
(B) Increased dead space ventilation
(C) Inhibition of hypoxic pulmonary vasoconstriction
During attempted cannulation of the right internal jugular vein, the exploring needle goes lateral to the vein. Which of the following structures is most likely to be encountered?