The Living Guidelines: UA/NSTEMI Recommendations for PCI Suggest Revisions to the CLASS IIa Guidelines

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Class IIa Guidelines

 * 1) Percutaneous coronary intervention is reasonable for focal saphenous vein graft (SVG) lesions or multiple stenoses in UA / NSTEMI patients who are undergoing medical therapy and who are poor candidates for reoperative surgery. (Level of Evidence: C)
 * 2) Percutaneous coronary intervention (or CABG) is reasonable for UA / NSTEMI patients with 1 or 2 vessel CAD with or without significant proximal left anterior descending CAD but with a moderate area of viable myocardium and ischemia on noninvasive testing. (Level of Evidence: B)
 * 3) Percutaneous coronary intervention (or CABG) can be beneficial compared with medical therapy for UA / NSTEMI patients with 1 vessel disease with significant proximal left anterior descending CAD. (Level of Evidence: B)
 * 4) Use of PCI is reasonable in patients with UA / NSTEMI with significant left main CAD (>50% diameter stenosis) who are candidates for revascularization but are not eligible for CABG or who require emergent intervention at angiography for hemodynamic instability. (Level of Evidence: B)