10 Random Questions
The ECG tracing shows
- (A) aberrant intraventricular conduction
- (B) acceleration of phase 4 depolarization of the sinus node
- (C) a compensatory pause
- (D) initiation of re-entrant supraventricular tachycardia
- (E) paroxysmal atrial fibrillation
Optimal positioning of a left-sided double-lumen endobronchial tube is easier than positioning of a right-sided endobronchial tube because the
- (A) angle between the trachea and bronchus is wider on the left
- (B) diameter of the left mainstem bronchus is larger
- (C) diameter of the left upper lobe bronchus is larger
- (D) distance between the left upper lobe bronchus and the carina is greater
- (E) left mainstem bronchus is more rigid
During laser microsurgery of the larynx using an endotracheal tube, a fire occurs in the airway. Which of the following is the most appropriate initial management?
- (A) Increase FiO2 to 1.0
- (B) Instill saline into the endotracheal tube
- (C) Perform cricothyroidotomy
- (D) Remove the endotracheal tube
- (E) Ventilate with air
In a 5-kg boy with Treacher Collins syndrome who is to undergo cleft palate repair, endotracheal intubation is best accomplished with
- (A) awake nasal intubation after topical anesthesia
- (B) halothane anesthesia with spontaneous ventilation
- (C) light isoflurane anesthesia and a muscle relaxant
- (D) thiopental and succinylcholine sequence intravenously
- (E) nasal intubation after administration of ketamine intramuscularly
Which of the following statements concerning cystoscopy in a patient with a spinal cord injury is true?
- (A) The risk for autonomic hyperreflexia is lower with injury below T10 than with injury above T10
- (B) Anesthesia is unnecessary if the injury is above T7
- (C) Ganglionic blockade is ineffective in preventing autonomic hyperreflexia
- (D) Spinal anesthesia is contraindicated
- (E) Bladder irrigation causes tachycardia
A 70-year-old man who has just undergone an abdominal aortic aneurysm repair under halothane anesthesia develops hypertension, dyspnea, and cyanosis shortly after awakening in the recovery room. Administration of furosemide 20 mg intravenously improves the cyanosis within 10 minutes. This immediate effect of furosemide is best explained by
- (A) inotropic effect from electrolyte shifts
- (B) decreased preload through diuresis
- (C) increased peripheral venous capacitance
- (D) decreased pulmonary vascular resistance
- (E) increased coronary blood flow
Which of the following is characteristic of the airway in a 2-month-oId infant when compared with an adult airway?
- (A) Airway is narrowest at the cricoid cartilage
- (B) Epiglottis is broader
- (C) Laryngeal mucosa is more tightly adherent
- (D) Larynx is positioned lower in the neck
- (E) Vocal cords have a more cephalad anterior attachment
During an inguinal hernia repair, a newborn infant will have a larger fluid requirement (in milliliters per kilogram) than an adult because of relatively greater
- (A) insensible water loss
- (B) lean body mass
- (C) metabolic rate
- (D) sodium loss
- (E) third space losses
Which of the following is most indicative of reflex sympathetic dystrophy?
- (A) Dry skin
- (B) Dull pain that improves with movement
- (C) Fasciculations
- (D) Motor weakness
- (E) Pallor and cyanosis
A 72-year-old patient who takes levodopa and carbidopa is undergoing colon resection. Metoclopramide is administered preoperatively and anesthesia is maintained with proposal, fentanyl, and nitrous oxide, with vecuronium for muscle relaxation. Fifteen minutes after reversal of muscle relaxation with neostigmine and atropine and tracheal extubation, the patient has dyspnea and muscular rigidity. Which of the following is the most likely cause?
- (A) Central anticholinergic syndrome
- (B) Fentanyl-induced rigidity
- (C) Inhibition of methionine synthetase by nitrous oxide
- (D) Metoclopramide-induced dopamine antagonism
- (E) Peripheral conversion of levodopa to dopamine