10 Random Questions
The preanesthetic ECG trace (lead II) shown from a 32-year-old woman suggests
- (A) potential for tachyarrhythmia
- (B) need for preanesthetic atropine
- (C) myocardial ischemia
- (D) left bundle branch block
- (E) right ventricular hypertrophy
Which of the following findings is an early indication of cyanide toxicity?
- (A) Bronchospasm
- (B) Cardiac dysrhythmias
- (C) Decreased mixed venous P02
- (D) Increased intracranial pressure
- (E) Metabolic acidosis
Addition of 20 cmH2O positive end-expiratory pressure to a patient receiving controlled mechanical ventilation decreases cardiac output and left ventricular function by
- (A) increasing right ventricular preload
- (B) increasing right ventricular afterload
- (C) increasing left ventricular preload
- (D) increasing left ventricular afterload
- (E) producing myocardial ischemia
A 45-year-old woman with mitral stenosis is scheduled for elective mitral valve replacement. Two minutes after tracheal intubation, she develops atrial fibrillation with a ventricular response rate of 150 bpm and a decrease in blood pressure to 75/45 mmHg. Which of the following is the most appropriate first step in management?
- (A) Increasing the concentration of enflurane
- (B) Increasing the infusion rate of lactated Ringer's solution
- (C) Intravenous administration of digoxin
- (D) Intravenous administration of propranolol
- (E) Electrical cardioversion
Which of the following is most effective in decontaminating an anesthesia machine that was splattered with HIV-contaminated blood?
- (A) Bleach
- (B) Deionized water
- (C) Ethylene oxide
- (D) Hydrogen peroxide
- (E) Isopropyl alcohol
Which of the following pulmonary components is altered the most in a morbidly obese patient?
- (A) Total lung volume
- (B) Tidal volume
- (C) Inspiratory reserve volume
- (D) Expiratory reserve volume
- (E) Ratio of dead space to tidal volume
A 2.3-kg 1-day-old term infant requires repair of a gastroschisis. Which of the following combinations is most appropriate for intraoperative fluid management?
- (A) Dextrose 5% in water for maintenance and lactated Ringer's solution for replacement of third space losses
- (B) Dextrose 10% in water for maintenance and lactated Ringer's solution for replacement of third space losses
- (C) Lactated Ringer's solution for maintenance and replacement of third space losses
- (D) Lactated Ringer's solution for maintenance and albumin 5% for replacement of third space losses
- (E) Normal saline solution for maintenance and lactated Ringer's solution for replacement of third space losses
Following enflurane anesthesia, serum free fluoride concentration is most likely to be increased in association with long-term use of
- (A) diazepam
- (B) ethanol
- (C) isoniazid
- (D) phenobarbital
- (E) phenytoin
Which of the following changes in pulmonary function best explains the more rapid rate of rise of alveolar concentration of volatile anesthetics in pregnant women than in nonpregnant women?
- (A) Decreased functional residual capacity
- (B) Decreased dead space ventilation
- (C) Increased cardiac output
- (D) Increased oxygen consumption
- (E) Increased pulmonary venous admixture
Which of the following findings on the left is most likely to be associated with an increased risk of complications with cannulation of the left internal jugular vein compared with cannulation of the right internal jugular vein?
- (A) Longer recurrent laryngeal nerve
- (B) Lower location of the cupola of the pleura
- (C) More acute angle between the internal jugular and innominate veins
- (D) More anterior location of the phrenic nerve
- (E) Presence of the thoracic duct