A Retrospective Study Of Coronary Artery Bypass Graft Using Ntsvg
Tomohiro Nakajima, Yutaka Iba, Tsuyoshi Shibata, Shingo Tsushima, Ayaka Arihara, Itaru Hosaka, Akihito Ohkawa, Junji Nakazawa, Nobuyoshi Kawaharada.
Sapporo Medical University, Sapporo, Japan.
BACKGROUND: We focused on coronary artery bypass grafting using the great saphenous vein (G-SVG) and compared NT-SVG and conventional SVG.
METHODS: Coronary artery bypass grafting using the great saphenous vein was performed at our hospital over a 15-year period from 2007/04 to 2022/08. The primary endpoint was the patency of the great saphenous vein at discharge, and secondary endpoints were delayed healing of the great saphenous vein harvest wound, delayed healing of the mid-thoracic wound, and factors related to coronary artery bypass surgery.
RESULTS: There were 183 patients who underwent coronary artery bypass surgery using the great saphenous vein during the study period. There were 131 male patients (72%) and 52 female patients (28%) with a mean age of 69years (38-94 years). The method of harvesting the great saphenous vein was NT-SVG in 29 cases (16%) and conventional SVG in 154 cases (84%). Patients were divided into two groups: NT-SVG group and standard-collection SVG group. We compared graft patency at discharge, healing failure of the lower leg wound, healing failure of the mid-thoracic wound, and flow by transit-time flow measurement (TTFM).
CONCLUSION: There were no significant differences in perioperative outcomes between the NT-SVG and conventional SVG groups in this study. 
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