During exploration of the posterior fossa with the patient in the sitting position, blood pressure decreases from 120/70 to 70/40 mmHg, central venous pressure increases from 6 to 16 mmHg, oxygen saturation decreases to 88%, nitrogen is detected by the mass spectrometer, and premature ventricular contractions appear on the ECG. The most appropriate management is to
A 45-year-old woman who sustained a subarachnoid hemorrhage 18 hours ago develops a severe headache and becomes unresponsive. Which of the following is the most likely cause of this patient's change in mental status?
During transurethral resection of the prostate under spinal anesthesia with a sensory level to T10, a patient has sudden onset of sharp upper abdominal pain and nausea. Arterial blood pressure increases from 120/80 to 150/90 mmHg; the patient becomes diaphoretic. Which of the following is the most likely diagnosis?
A 5-year-old child is brought to the emergency department in considerable respiratory distress. He is sitting leaning forward and drooling. He was well until four hours ago, when temperature increased to 38.9°C and he complained of a sore throat. The most appropriate initial management is to
(A) administer nebulized racemic epinephrine
(B) gently examine the airway with a tongue blade
(C) obtain a lateral radiograph of the neck
(D) perform a rapid induction-intubation sequence
(E) perform inhalation induction without cricoid pressure
Following induction of anesthesia with sufentanil and pancuronium, a patient with left main coronary artery disease has a decrease in blood pressure from 110/70 to 60/40 mmHg. There is no change in heart rate or ECG. The most appropriate management of the hypotension is administration of
Following transfusion of packed red blood cells during general anesthesia, the patient's blood pressure decreases, heart rate and temperature increase, and hemoglobinuria and diffuse oozing are observed. Which of the following is the most appropriate first step in management?