Percutaneous Revascularization of Lesions With Saphenous Vein Graft Failure

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  • Influence of Chronic Total Occlusion on Early Outcome

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The purpose of this study was to evaluate a therapeutic strategy of percutaneous transluminal coronary angioplasty (PTCA) in patients with recurrent angina following coronary artery bypass grafting. The study looked at 112 branches associated with graft failure, excluding new lesions in the native coronary artery (NCA). Chronic total occlusion (CTO) was observed in 50% of NCA (56/112) and in 68% of the grafts (76/112). Thirty-three branches (29%) showed CTO in both NCA and the graft. The overall success rate was 86% (96/112). The success rate on NCA was 98% (44/45) in non-CTO, while in CTO it was significantly lower at 62% (18/29). As to grafts, the success rate was 94% (32/34) in non-CTO, while it was 50% (2/4) in CTO. These characteristics, with respect to lesion morphology and the prevalence of CTO, exerted an influence on the selection of the access vessels for revascularization. Early outcome depended on the result of treatment of CTO. (Jpn Circ J 1998; 62: 687 - 690)

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