Quantitative coronary angiography after directional coronary atherectomy

摘要: Directional coronary atherectomy (DCA) has been developed to solve some of the shortcomings conventional percutaneous transluminal angioplasty (PTCA). By relying in part upon excision atheromatous tissue rather than solely on dilatation effect with remodeling, DCA may result more favorable initial results intervention and favorably affect long-term results. was performed 378 patients 400 lesions at six United States centers; quantitative angiography all patients. The left anterior descending most commonly treated segment (57%) followed by right (25%), saphenous vein bypass grafts (13%), circumflex artery. Of lesions, 44% were American Heart Association/American College Cardiology class A, 37% B1, 18% B2. Procedural success achieved 87.8% lesions. minimal lesion diameter baseline 1.2 ± mm which increased 2.9 2.4 following DCA. final cross-sectional area significantly larger for compared other segments; this correlated an incidence postprocedural ectasia segment. Multivariate analysis assess associations outcome. clinical factors, restenotic associated a smaller area; angiographic residual while diffuse proximal disease long severe stenosis. procedural only one significant, i.e. device Knowledge these clinical, variables are improved outcome help optimize patient selection new evolving technology.