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Chapter 27. Coronary Guidewire Manipulation

Which of the following statements is true about guidewire cores?

A. Those that extend to the tip add wire flexibility.

B. Tapering detracts from trackability.

C. Cores that extend to the tip provide better torque transmission.

D. A wire with a nitinol core is less trackable than one with a stainless steel core.

The correct answer is C

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

A. Very flexible tip

B. Polymer jacket

C. Tapered tip

D. Continuous core

The correct answer is A

Which of the following lesion locations would be the most difficult to cross with a guidewire?

A. Origin of the posterior descending artery

B. Distal left anterior descending

C. Proximal retroflexed circumflex

D. Internal mammary-left anterior descending anastomosis

The correct answer is C

The best way to determine if guidewire “kinking” is responsible for apparent coronary narrowing is to:

A. Inflate a balloon in area of narrowing and look for balloon compression.

B. Perform fractional flow reserve measurement.

C. Withdraw floppy segment of wire into area of narrowing.

D. Administer intravenous nitroglycerine.

The correct answer is C

Which of the following are true about guidewire perforation?

A. Less frequent with polymer coated wires.

B. More common with subtotal than totally occluded lesions.

C. More common during wire exchanges.

D. Are usually obvious.

The correct answer is C

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