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Presently, sequential aortocoronary bypass grafting is a widely used method for the revascularization of multiple coronary vessel disease. In this study, the internal configurations of the anastomosed portions were investigated by casting models and the following results were obtained: In crossed side-to-side anastomoses with longitudinal incisions, the anastomosed area for the incised length was larger than in the other anastomosis techniques. Interrupted sutures produced a larger anastomosed area for the incised length than other suture techniques. Crossed side-to-side anastomoses with one longitudinal and one transverse incision resulted in the most frequent reoccurrence of narrowings.

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