10 Random Questions


A 29-year-old man who has been nasotracheally intubated for two weeks following a motor vehicle accident has a fever (39C) and a constant headache. Leukocyte count is 18,000/mm3. The most likely cause is

ADVANCED Respiratory & Critical Care

A 39-year-old patient with insulin-dependent diabetes mellitus receives thiopental 250 mg and succinylcholine 80 mg and is ventilated with 0.75% isoflurane in oxygen. Arterial pressure decreases abruptly from 140/100 to 80/50 mmHg while heart rate remains unchanged at 70 bpm. Failure of heart rate to increase most likely results from

ADVANCED General

The duration of action of an induction dose of thiopental is determined primarily by its

BASIC Pharmacology & Pharmacokinetics

Desflurane is delivered using a vaporizer that contains internal heaters because

BASIC Equipment & Physics Pharmacology & Pharmacokinetics

Which of the following statements concerning carbon monoxide poisoning is true? A 38-year-old woman with a large goiter has undergone subtotal thyroidectomy. Airway obstruction is noted immediately after extubation despite normal vocal cord function on laryngoscopy. Which of the following is the most likely explanation?

ADVANCED General

The cardiovascular effects of an inhalational anesthetic are evaluated in 10 normal volunteers in the awake resting state and after 15 minutes of constant inspired concentration. Results were analyzed by t-test for paired data and are presented below as mean +/- standard deviation. Based on these data, which of the following conclusions is most valid?

BASIC General

Alveolar partial pressure of an inhaled anesthetic rises more rapidly in a parturient at term than in a nonpregnant woman because


During prolonged labor, a fetal scalp blood sample shows a PO2 of 21 mmHg, a PCO2 of 46 mmHg, and a pH of 7.35. These findings suggest

ADVANCED Pediatric

Mismatching of ventilation to perfusion in the lung is greatest in which of the following situations?

BASIC Respiratory & Critical Care

Which of the following factors is LEAST likely to affect serum ionized calcium concentration following blood transfusion?

BASIC Transfusions & Fluids