Q:

A 70-year-old woman with intractable angina pectoris undergoes cardiac catheterization for possible mechanical intervention. She prefers PTCA to open correction. The following is/are true:

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A 70-year-old woman with intractable angina pectoris undergoes cardiac catheterization for possible mechanical intervention. She prefers PTCA to open correction. The following is/are true: 


  1. A long symmetric lesion in the left main coronary artery would be appropriate for PTCA
  2. Multiple obstructive lesions in the same artery would be a contraindication to PTCA
  3. A focal lesion in the left anterior descending coronary artery where the vessel is 1 mm in diameter would allow PTCA
  4. Successful PTCA for a simple lesion carries a recurrent stenosis risk of less than 10%

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b. Multiple obstructive lesions in the same artery would be a contraindication to PTCA

The ideal lesion for PTCA is focal symmetric stenosis in an epicardial vessel. However, it is relatively contraindicated for significant disease in the left main coronary, for multiple obstructive lesions in the same artery, and for vessels less than 2 mm in diameter. Restenosis rates of 20% to 40% occur within the first 4–6 months after successful dilation for simple lesions

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