10 Random Questions
Monitoring sensory evoked potentials may be useful in detecting functional derangement of each of the following EXCEPT
- (A) cranial nerve pathways during posterior fossa operations
- (B) motor pathways during anterior cervical discectomy
- (C) dorsal column pathways during operations for spinal tumors
- (D) visual pathways during operations on the sphenoid wing
- (E) cortical pathways during carotid artery operations
Which of the following postoperative treatments decreases the risk for deep venous thrombosis?
- (A) Blood transfusion
- (B) Epidural anesthesia
- (C) Etomidate
- (D) Ketorolac
- (E) Patient-controlled analgesia
Which of the following drugs used to produce or reverse muscle relaxation has the greatest prolongation of action in a patient with end-stage renal disease?
- (A) Atracurium
- (B) Neostigmine
- (C) Pancuronium
- (D) Succinylcholine
- (E) Vecuronium
A 69-year-old man is confused and agitated one hour after preoperative intramuscular administration of scopolamine for awake fiberoptic laryngoscopy. SpO2 measured by pulse oximetry is 97%. Which of the following drugs is most appropriate for treatment of the change in mental status?
- (A) Fentanyl
- (B) Flumazenil
- (C) Midazolam
- (D) Neostigmine
- (E) Physostigmine
A 35-year-old woman receiving isoflurane anesthesia suddenly develops tachycardia, hypertension, and multifocal ventricular ectopy during dissection of a pheochromocytoma. Each of the following would be appropriate treatment EXCEPT
- (A) administration of an alpha-adrenergic blocker
- (B) administration of a beta-adrenergic blocker
- (C) administration of lidocaine
- (D) administration of nitroprusside
- (E) switching from isoflurane to enflurane
A healthy, but obese, 110-kg woman is scheduled for gastric stapling. Compared with that required at her ideal weight, the dose of thiopental required for anesthetic induction would likely be increased because of changes in
- (A) blood volume
- (B) muscle mass
- (C) circulation time
- (D) body fat
- (E) metabolic rate
During laser excision of vocal cord polyps in a 5-year-old boy, dark smoke suddenly appears in the surgical field. The trachea is intubated and anesthesia is being maintained with halothane, nitrous oxide, and oxygen. The most appropriate initial step is to
- (A) change from oxygen and nitrous oxide to air
- (B) fill the oropharynx with water
- (C) instill water into the endotracheal tube
- (D) remove the endotracheal tube
- (E) ventilate with carbon dioxide
Which of the following statements about thiopental is true?
- (A) Rapid uptake into maternal tissues limits its transfer to the fetus
- (B) Its short duration of action is due to its extensive binding to plasma proteins
- (C) Accumulation in fat leads to acute tolerance
- (D) Alkalinity of solution causes respiratory depression
- (E) Uptake into brain is slowed by respiratory acidosis
The ECG rhythm shown developed during cholecystectomy in a 62-year-old man who had a myocardial infarction and is taking atenolol. The drug of choice for treating this dysrhythmia is
- (A) atropine
- (B) bretylium
- (C) isoproterenol
- (D) lidocaine
- (E) procainamide
Which of the following is decreased by alkalinization of a 1.5% lidocaine solution?
- (A) Concentration of free base
- (B) Dose required for anesthesia
- (C) Duration of anesthesia
- (D) Intracellular concentration of ionized lidocaine
- (E) Time to onset of anesthesia