10 Random Questions
A 35-kg child requires mechanical ventilation with 100% oxygen at a tidal volume of 350 mL and a rate of 20/min during a severe asthma attack. The most likely cause of severe hypotension after initiating mechanical ventilation is
- (A) hypoxic circulatory depression
- (B) inadequate expiratory time
- (C) increased pulmonary vascular resistance
- (D) respiratory alkalosis
- (E) tension pneumothorax
Fentanyl-induced bradycardia is
- (A) independent of the speed of injection
- (B) independent of dose
- (C) caused by direct inhibition of adrenal catecholamine release
- (D) caused by vagal stimulation
- (E) caused by direct SA node depression
The twitch responses shown are from a healthy 80-kg patient anesthetized with fentanyl and nitrous oxide. Relaxant drugs X and Y are most likely
- (A) X: atracurium 30 mg, Y: vecuronium 4 mg
- (B) X: atracurium 30 mg, Y: vecuronium 8 mg
- (C) X: pancuronium 4 mg, Y: pancuronium 8 mg
- (D) X: vecuronium 4 mg, Y: atracurium 30 mg
- (E) X: vecuronium 4 mg, Y: pancuronium 8 mg
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
The severity of chronic bronchitis is best assessed by measuring
- (A) tidal volume
- (B) carbon dioxide diffusion capacity
- (C) sputum production over 24 hours
- (D) forced vital capacity
- (E) arterial blood gases
Which of the following produces falsely high Sp02?
- (A) Carboxyhemoglobin
- (B) Fetal hemoglobin
- (C) Hematocrit less than 20%
- (D) Indigo carmine
- (E) Methylene blue
A woman is in labor at 40 weeks' gestation and the fetus is in breech presentation. Which of the following will provide adequate uterine relaxation for vaginal delivery?
- (A) Spinal anesthesia
- (B) Epidural anesthesia
- (C) Halothane anesthesia
- (D) Pudendal nerve block
- (E) Magnesium sulfate
This flow-volume loop from a 57-year-old man is most consistent with which of the following conditions?
- (A) Bronchospasm
- (B) Decreased vital capacity
- (C) Myasthenia gravis
- (D) Narrowing of the upper airway
- (E) Pneumothorax
Which of the following is the most appropriate action after an anesthetic vaporizer is tipped?
- (A) Return to the manufacturer for recalibration
- (B) Flush the vaporizer with oxygen at 5 L/min for 24 hours
- (C) Store the vaporizer for 24 hours at room temperature
- (D) Set the vaporizer at low concentration and flush with oxygen at 10 L/min for 30 minutes
- (E) Verify the vaporizer output with mass spectrography
Which of the following is the most likely sequela of interscalene brachial plexus block?
- (A) Cervical epidural block
- (B) Hemidiaphragmatic paralysis
- (C) Pneumothorax
- (D) Seizure
- (E) Vocal cord paralysis