4939751
Question 1
Question
A 55-yo woman is undergoing GA for a Lt hemicolectomy. After induction the patient develops a junctional arrhythmia. Which inhalational anesthetic would MOST likely be associated with this arrhythmia?
Answer
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Desflurane
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Isoflurane
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Halothane
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Sevoflurane
Question 2
Question
Isoflurane is chosen for maintenance of general anesthesia in an elderly patient with severe coronary artery disease. Which of the following is MOST responsible for maintenance of cardiac output during isoflurane administration?
Answer
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Coronary artery vasodilation
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Increased systemic vascular resistance
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Increased venous capacitance
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Increased heart rate
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Decreased myocardial oxygen demand
Question 3
Question
Which of the following would result in an INCREASE in the production of Compound A from the interaction between carbon dioxide absorbent and sevoflurane?
Answer
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Low carbon dioxide absorbent temperatures
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Low alveolar partial pressure of sevoflurane
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High fresh gas flows
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Short duration of sevoflurane administration
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Carbon dioxide absorbent desiccation
Question 4
Question
A 49-yo woman with CAD undergoes GA for resection of his intracranial tumor. Which of the following statements justify the choice of desflurane for anesthetic maintenance in this patient?
Answer
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Desflurane will increase coronary blood flow
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Desflurane will increase mean arterial pressure
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Desflurane will decrease cerebral blood flow
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Desflurane has a low incidence of airway irritation
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Desflurane allows for rapid emergence
Question 5
Question
With which of the following anesthetic agents induction will be the most rapid?
Answer
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Sevoflurane
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Isoflurane
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Halothane
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Desflurane
Question 6
Question
A 52-year-old man is taken to the operating room for repair of his retinal detachment. The ophthalmologist discusses intraocular injection of intraocular injection of either air or sulfur hexafluoride (SF6) to facilitate retinal reattachment. Which is true regarding the administration of nitrous oxide to this patient?
Answer
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An intraocular air bubble will expand more quickly during N2O administration compared to an SF6 bubble.
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Discontinuing N2O 15 minutes prior to bubble injection can avoid the risk of gas expansion.
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An SF6 bubble will slowly shrink in the first 24 hours after injection
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N2O can be safely administered to this patient 1 day after intraocular air injection.
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N2O can be safely administered to this patient 5 days after intraocular SF6 injection
Question 7
Question
Which of the following reasons best explains the more rapid alveolar washout of halothane compared with isoflurane?
Answer
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Increased metabolism of halothane
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Differences in blood solubility
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Differences in the blood/brain partition coefficient
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Differences in the oil/gas partition coefficient
Question 8
Question
During administration of isoflurane to an obese 40-year-old woman undergoing foot surgery, the vaporizer dial is set at 2%. The inspired concentration of isoflurane measured by the mass spectrometer is, howeveronly1.2%. The BEST explanation for this observation is
Answer
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Increased uptake into the patient's fatty tissues
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Absorption of volatile anesthetic by the CO2 absorber
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Absorption of volatile anesthetic by the anesthesia circuit tubing
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Dilution by expired patient gases
Question 9
Question
Which of the following is the most likely contributor to development of a fire in the CO2 absorber when sevoflurane is administered?
Answer
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Desiccated absorbent
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Presence of Ca(OH)2 in the absorbent
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Low sevoflurane concentration
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Low fresh gas flows
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