70 -3 (89) 2026 - Sh.U. Buranov - THE ROLE OF MSCT ANGIOGRAPHY IN ASSESSING LONG-TERM CLINICAL OUTCOMES OF SEQUENTIAL AND COMPOSITE CORONARY BYPASS GRAFTING

THE ROLE OF MSCT ANGIOGRAPHY IN ASSESSING LONG-TERM CLINICAL OUTCOMES OF SEQUENTIAL AND COMPOSITE CORONARY BYPASS GRAFTING

Sh.U. Buranov - Bukhara branch of the Republican Scientific Center for Emergency Medical Care

Resume

The aim of this study was to evaluate the long-term clinical outcomes and patency of coronary bypass grafts using sequential and composite Y-graft techniques of coronary artery bypass surgery with the use of multislice computed tomography angiography (MSCT angiography). The study included 120 patients who underwent direct myocardial revascularization surgery. The patients were divided into two groups: Group I — 43 patients in whom the sequential coronary bypass technique was used; Group II — 38 patients in whom a composite Y-graft configuration was applied. Long-term outcomes were assessed over a 48-month period after surgery. Survival and freedom from adverse cardiovascular events were analyzed using the Kaplan–Meier method. The Cox proportional hazards model was used to determine risk factors for graft occlusion. During the 48-month follow-up period, the survival rate was 97.7% in the sequential bypass group and 97.4% in the composite Y-graft group. No occlusion of sequential grafts was observed, whereas graft occlusion was detected in 5% of patients in the composite graft group. Freedom from coronary graft occlusion was 100% and 93.1%, respectively. Multivariate analysis showed that the use of a venous conduit increased the risk of graft occlusion by 2.5 times (HR=2.587; p=0.001). Increased peripheral resistance index and decreased volumetric blood flow velocity were also identified as significant risk factors. The incidence of myocardial infarction and other major cardiovascular events did not differ statistically between the groups. Sequential coronary artery bypass grafting provides comparable or more favorable long-term clinical and angiographic outcomes compared with the composite Y-graft technique. The use of MSCT angiography is an informative non-invasive method for assessing coronary graft patency and monitoring the results of surgical myocardial revascularization in the long-term postoperative period.

Keywords: ischemic heart disease, coronary artery bypass grafting, sequential grafting, composite Y-graft, graft patency, MSCT angiography.

First page

430

Last page

439

For citation:Sh.U. Buranov - THE ROLE OF MSCT ANGIOGRAPHY IN ASSESSING LONG-TERM CLINICAL OUTCOMES OF SEQUENTIAL AND COMPOSITE CORONARY BYPASS GRAFTING//New Day in Medicine 3(89)2026 430-439 https://newdayworldmedicine.com/en/new_day_medicine/3-89-2026

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