内視鏡下大伏在静脈採取における術前単純CT評価

Preoperative Evaluation of Saphenous Vein Graft Using Plain Computed Tomography for Endoscopic Saphenous Vein Harvesting

冠状動脈バイパス術（CABG）における大伏在静脈（SV）採取は，機器の進歩により内視鏡下での採取（EVH）が普及した．われわれは，術前に単純CTを撮影し3D画像解析システムを用いて詳細なSVの走行を評価している．EVHにおける有用性について検討した．

We report the preoperative evaluation of saphenous vein （SV） graft using plain computed tomography （CT） for endoscopic saphenous vein harvesting （EVH）. We made three-dimensional （3D） images of SV by using plain CT images. EVH was performed in 33 patients from July 2019 to September 2020. The mean age of the patients was 69±23 years, and 25 patients were men. The success rate of EVH was 93.9％. Hospital mortality was 0％. Postoperative wound complications was 0％. The early patency was 98.2％ （55/56）. 3D images of SV by plain CT are very important information for EVH because of surgical procedure in a closed space. Early patency is good and mid and long term patency of EVH may be improved due to safety and gentle technique by CT information.