Angiographic Predictors of 6-Month Patency of Bypass Grafts Implanted to the Right Coronary Artery: A Prospective Randomized Comparison of Gastroepiploic Artery and Saphenous Vein Grafts

摘要: OBJECTIVES: The purpose of this study was to define the pre-operative angiographic variables that could influence graft patency and flow pattern. BACKGROUND: Saphenous vein grafts (SVG) pedicled right gastroepiploic artery (RGEA) are routinely used revascularize coronary (RCA). Little is known about predictive value objective parameters on 6-month interest these select optimal material in individual cases. METHODS: We prospectively enrolled 172 consecutive patient candidates for revascularization. Revascularization RCA randomly performed with SVG 82 patients or RGEA 90 patients. Both groups were comparable respect all continuous discrete variable risk factors. All underwent a systematic control 6 months after surgery. Pre-operative included minimal lumen diameter (MLD), percent stenosis reference measured by quantitative angiography (CAAS II system, Pie Medical, Maastricht, Netherlands), location stenosis, run off RCA, regional wall motion revascularized territory. RESULTS: A significant difference distribution patterns observed between RGEA. In multivariate analysis, graft-dependent pattern significantly associated both MLD group but only group. group, proportion patent higher when below threshold lying third quartile (0.77 1.40 mm). CONCLUSIONS: predicts RGEA, whereas less influenced parameters.