Left ventricular end-diastolic volume is most likely to be underestimated by pulmonary artery occlusion pressure in patients with
Intrabiliary pressure will be increased to the greatest extent by intravenous administration of
A healthy 18-year-old youth is scheduled for an emergency operation for removal of a steel splinter from his right iris. Anesthesia is induced with thiopental and pancuronium and, following tracheal intubation, is maintained with nitrous oxide 2 liters, oxygen 2 liters, and halothane 1.5%. Conjunctival instillation of phenylephrine solution 10% increases blood pressure from 110/70 to 230/110 mmHg and decreases pulse from 70 to 46 bpm. The ECG shows a bigeminal pattern. The most appropriate treatment is to
In a patient with surgically significant aortic insufficiency, cardiac output measured by thermodilution will
In a patient with adult respiratory distress syndrome who is being mechanically ventilated, which of the following findings indicates the most severe disease?
A child has tachypnea immediately after reintubation for intractable laryngospasm. Oxygen saturation is 78% at an FiO2 of 1.0. A radiograph of the chest taken 15 minutes later is most likely to show
A 35-year-old woman with systemic lupus erythematosus is admitted to the critical care unit following sudden onset of severe chest pain. Examination shows tachycardia, hypotension, pulmonary edema, and a blowing systolic murmur in the left parasternal region. The most appropriate management is
A conscious patient has an acute subdural hematoma that will require surgical evacuation. Which of the following interventions to be carried out in the emergency department is most likely to decrease intracranial pressure?
Administration of 200 mEq of sodium bicarbonate during cardiopulmonary resuscitation is associated with
Which of the following inhalational anesthetics best relieves left ventricular outflow obstruction in a patient with hypertrophic obstructive cardiomyopathy (IHSS)?