The Living Guidelines: Recommendations for Echocardiography, Treadmill Exercise Testing, Stress Radionuclide Imaging, Stress Echocardiography Studies, and Coronary Angiography during Patient Follow-up Suggest Revisions to the CLASS III Guidelines

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Class III Guidelines
1. Use of PCI or CABG for patients with one or two vessel coronary artery disease (CAD) without significant proximal LAD CAD, and


 * a. Only a small area of viable myocardium. (Class III Level of Evidence: C)  or


 * b. No demonstrable ischemia on noninvasive testing.(Class III Level of Evidence: C)

2. Use of PCI or CABG for patients with borderline coronary stenoses (50% to 60% diameter in locations other than the left main coronary artery) and no demonstrable ischemia on noninvasive testing. (Class III Level of Evidence: C)

3. Use of PCI or CABG for patients with insignificant coronary stenosis (<50% diameter). (Class III Level of Evidence: C)

4. Use of PCI in patients with significant left main CAD who are candidates for CABG. (Class III Level of Evidence: B)