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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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The correct answer is C

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Which of the following wire features is not helpful for crossing a total occlusion?

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A. Very flexible tip

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B. Polymer jacket

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C. Tapered tip

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D. Continuous core

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The correct answer is A

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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 correct answer is C

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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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The correct answer is C

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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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D. Are usually obvious.

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The correct answer is C

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