10 Random Questions


Following pneumonectomy, a paralyzed patient being mechanically ventilated has the following arterial blood gas values: PaO2 71 mmHg, PaCO2 55 mmHg, pH 7.29. SvO2 is 45%. The most likely explanation for this SvO2 is

ADVANCED Respiratory & Critical Care General

Which of the following statements concerning barbiturate protection from cerebral ischemia is true?

ADVANCED Neuro

Preoperative evaluation of a patient who has marked malnutrition will demonstrate each of the following EXCEPT

BASIC General

Which of the following fluids will restore circulating blood volume with the smallest infused volume?


Each of the following is an effect of rapid infusion of mannitol EXCEPT

ADVANCED Pharmacology & Pharmacokinetics Neuro

A 90-kg, 59-year-old man with chronic obstructive pulmonary disease is undergoing laparotomy. Mechanical ventilation is being carried out with a fresh gas flow of 2 L/min at a rate of 16/min and tidal volume of 900 ml; I:E ratio is 1:2.5. PaCO2 remains greater than 50 mmHg. Preoperative PaCO2, was normal. Which of the following is the most appropriate next step?

ADVANCED Respiratory & Critical Care General

One hour after induction of anesthesia for a posterior fossa craniotomy using opioid, relaxant, and nitrous oxide, the brain begins to protrude through the dura. The most effective measure to decrease intracranial pressure is to

ADVANCED Neuro

During attempted awake intubation, the patient gags when the laryngoscope presses on the base of the tongue. Which of the following cranial nerves is responsible for the afferent limb of this reflex?

BASIC Regional & Pain

In a patient with surgically significant aortic insufficiency, cardiac output measured by thermodilution will

ADVANCED Cardiac

Immediately after a retrobulbar block for cataract surgery, the eye grossly protrudes and the patient has the sensation of pressure in the eye. The most appropriate initial intervention is

ADVANCED Regional & Pain