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Chapter 27. Coronary Guidewire Manipulation
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Which of the following statements is true about guidewire cores?
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A. Those that extend to the tip add wire flexibility.
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B. Tapering detracts from trackability.
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C. Cores that extend to the tip provide better torque transmission.
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D. A wire with a nitinol core is less trackable than one with a stainless steel core.
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Which of the following wire features is not helpful for crossing a total occlusion?
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Which of the following lesion locations would be the most difficult to cross with a guidewire?
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A. Origin of the posterior descending artery
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B. Distal left anterior descending
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C. Proximal retroflexed circumflex
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D. Internal mammary-left anterior descending anastomosis
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The best way to determine if guidewire “kinking” is responsible for apparent coronary narrowing is to:
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A. Inflate a balloon in area of narrowing and look for balloon compression.
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B. Perform fractional flow reserve measurement.
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C. Withdraw floppy segment of wire into area of narrowing.
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D. Administer intravenous nitroglycerine.
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Which of the following are true about guidewire perforation?
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A. Less frequent with polymer coated wires.
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B. More common with subtotal than totally occluded lesions.
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C. More common during wire exchanges.
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