10 Random Questions
Which of the following drugs is contraindicated in patients with Parkinson's disease?
- (A) Atropine
- (B) Dopamine
- (C) Droperidol
- (D) Fentanyl
- (E) Isoflurane
Each of the following statements about muscle rigidity induced by opioids is true EXCEPT:
- (A) The degree of rigidity is related to the rate of opioid administration
- (B) It is more apparent during the administration of nitrous oxide
- (C) Muscles of the trunk are affected more than muscles of the extremities
- (D) It results from a direct effect of the opioid on skeletal muscles
- (E) It can be produced by large doses of morphine
During liver transplantation, venovenous bypass from the femoral and portal veins to the axillary vein during cross-clamping of the inferior vena cava
- (A) decreases urine output
- (B) prevents hypothermia
- (C) prevents metabolic acidosis
- (D) requires heparinization
- (E) supports cardiac output
A 15-year-old previously healthy boy is scheduled for a celiotomy to relieve an acute intestinal obstruction. A rapid sequence induction is used. Anesthesia is maintained with a balanced technique including nitrous oxide and oxygen (5L:2L), meperidine, and pancuronium. Because of abdominal distention and the high pressure required for inflation of the lungs, a nasogastric tube is inserted. The abdomen remains distended, but compliance improves dramatically. At this time the patient is cyanotic, PaO2 is 48 mmHg, PaCO2 is 52 mmHg, and pH is 7.29. Nitrous oxide is discontinued. The most important therapeutic measure is to
- (A) remove the nasogastric tube
- (B) insert a chest tube on the right side
- (C) withdraw the endotracheal tube 1 cm
- (D) deflate the cuff on the endotracheal tube
- (E) replace the endotracheal tube with one of larger internal diameter
To detect the delivery of hypoxic gas mixture, the optimal location for an oxygen analyzer in this circle is
- (A) 1
- (B) 2
- (C) 3
- (D) 4
- (E) 5
Recognized side effects of magnesium sulfate used for the treatment of preeclampsia that would be of anesthetic concern include each of the following EXCEPT
- (A) maternal pulmonary edema
- (B) neonatal hypotonia
- (C) increased maternal sensitivity to succinylcholine
- (D) increased maternal sensitivity to vecuronium
- (E) maternal hypokalemia
A patient sustains cardiac arrest while being mechanically ventilated. Which of the following is the most likely effect on PetCO2?
- (A) Gradual increase with the duration of asystole
- (B) Maintenance of the prearrest value
- (C) Abrupt decrease below the prearrest value
- (D) Decrease when thoracic compression is started
- (E) Gradual decrease independent of the ventilator cycle
In an unpremedicated, spontaneously breathing patient, an alveolar halothane concentration of 0.74% in oxygen is consistently associated with
- (A) absence of overt response to skin incision
- (B) constricted pupils
- (C) flaccidity of abdominal muscles
- (D) normal glomerular filtration rate
- (E) normal myocardial contractility
Preoperative administration of an alpha-adrenergic blocker for 10 days to patients with pheochromocytoma will decrease
- (A) episodic tachycardia
- (B) hyperglycemia
- (C) hypovolemia
- (D) nasal stuffiness
- (E) postural hypotension
A 70-kg, 46-year-old man is undergoing clipping of a cerebral aneurysm with nitrous oxide, opioid, relaxant anesthesia. He is otherwise healthy. As the surgeons are about to enter the dura, the brain is noted to be tense and bulging. Heart rate is 100 bpm and mean arterial pressure is 90 mmHg. PaO2 is 120 mmHg, PaCO2 is 23 mmHg, and pH is 7.50. Which of the following should be done immediately?
- (A) Hyperventilation to a PaCO2 of 15 to 20 mmHg
- (B) Administration of furosemide 20 mg intravenously
- (C) Administration of mannitol 0.5 g/kg
- (D) Administration of thiopental 250 mg in increments
- (E) Addition of halothane 1% to deepen anesthesia