10 Random Questions
Prompt control of seizures induced by bupivacaine is necessary because
- (A) cerebral metabolic rate for oxygen increases more than cerebral blood flow
- (B) cerebral blood flow is increased
- (C) bupivacaine decreases aerobic cerebral metabolism
- (D) cardiac failure may occur
- (E) ventilation may be impaired
Which of the following decreases dead space in an anesthetic circle system?
- (A) Larger surface area of the expiratory unidirectional valve
- (B) Placing a septum in the Y-piece
- (C) Shorter expiratory limb tubing
- (D) Smaller carbon dioxide absorber
- (E) Smaller reservoir bag
Which of the following statements concerning the superior laryngeal nerve is true?
- (A) It provides sensory innervation to the subglottic surface of the vocal cord
- (B) It provides sensory innervation to the inferior surface of the epiglottis
- (C) It is a branch of the glossopharyngeal nerve
- (D) It is blocked by injection of anesthetic near the lateral portion of the cricothyroid membrane
- (E) It is the most commonly injured nerve during thyroid surgery
Which of the following is the most likely effect of intramuscular ketamine used for induction of anesthesia in a 2-year-old child undergoing elective surgery?
- (A) Bronchoconstriction
- (B) Decreased heart rate
- (C) Decreased intracranial pressure
- (D) Increased salivation
- (E) Respiratory depression
The patient whose flow-volume loop is shown on the right most likely has
- (A) bronchial asthma
- (B) a fixed midtracheal tumor
- (C) nasal polyps
- (D) restrictive lung disease
- (E) vocal cord paralysis
Which of the following statements concerning postherpetic neuralgia is true?
- (A) It is effectively treated with neurolytic surgery
- (B) It is effectively treated with sympathetic nerve blocks
- (C) Duration is three to four weeks
- (D) Hyperesthesia occurs in the affected area
- (E) It occurs predominantly in adolescents
After a gastric stapling procedure, a 150-kg woman is extubated and breathing spontaneously in the recovery room at a rate of 26/min and an FiO2 of 0.5. Arterial blood gas analysis shows PaO2 96 mmHg, PaCO2 44 mmHg, and pH 7.37. The parameter most closely related to her increased alveolar-arterial oxygen tension gradient is
- (A) decreased expiratory reserve volume
- (B) decreased minute volume
- (C) decreased residual volume
- (D) decreased total lung capacity
- (E) rapid respiratory rate
Which of the following complications of caudal anesthesia with 0.25% bupivacaine is more likely in children than in adults?
- (A) Intravascular injection
- (B) Neurotoxicity
- (C) Profound motor block
- (D) Systemic toxicity
- (E) Total spinal block
Which of the following is a known effect of propofol?
- (A) Decreased amplitude of somatosensory evoked potentials
- (B) Induction of malignant hyperthermia
- (C) Inhibition of cytochrome P450
- (D) Initiation of porphyria
- (E) Suppression of adrenocortical function
An 80-kg, 70-year-old woman is scheduled for a mastectomy. She has a history of congestive heart failure treated with digoxin 0.25 mg daily. Preoperative examination shows a sinus rhythm at 80 bpm and blood pressure of 110/70 mmHg. Laboratory studies show a serum potassium concentration of 4.2 mEq/L and a serum digoxin concentration of 1.5 mcg/ml. Five minutes after induction of general anesthesia, ventricular bigeminy is noted; blood pressure is 85/65 mmHg, SpO2 is 97%, and PetCO2, is 20 mmHg. Which of the following is the most appropriate management?
- (A) Administration of calcium chloride
- (B) Administration of ephedrine
- (C) Administration of lidocaine
- (D) Administration of potassium chloride
- (E) Decrease in ventilation