Use of the composite Y-shaped veno-venous bypass graft in coronary surgery

Abstract

Introduction. This study was performed to assess the functional status of Y­shaped veno­venous bypass grafts in cases of lacking both arterial and venous material, as well as in patients with ascending aorta abnormalities, in order to perform the most adequate myocardial revascularisation. Material. The retrospective study performed in Scientific and Practical Center of Interventional Cardioangiology included 43 patients, who underwent surgery between 2017 and 2022. The main inclusion criterion for the study was coronary artery bypass grafting (CABG) with the use of Y­shaped venous conduits. The control bypass angiography was performed in average in 33 ± 8 months. All interventions were performed under normothermic cardiopulmonary bypass (CPB), and the average number of conduits per patient was 3.4. Results. Satisfactory functional status of the Y­shaped venous bypass grafts in the long­term (33 ± 8 months) period was observed in 86.1% of cases. At that, no cases of cerebrovascular accident were reported in the postoperative period, as well as no sternal infections in patients with insulin­dependent diabetes mellitus, and only one patient out of 20 patients with severe lower limb ischaemia had wound infection of the lower extremity (5%). Conclusions. Y­shaped veno­venous bypass grafts demonstrated quite acceptable long­term functional results in patients with ascending aorta abnormalities or conduit deficiency and they can be used to achieve the most adequate myocardial revascularisation. Keywords: CABG, Y­shaped bypass graft, venous conduit, aortic atheromatosis