Assessment of Early Graft Patency Following Coronary Artery Bypass Surgery Using Multislice CT Angiography.

Background: Coronary artery bypass grafting (CABG) is a widely performed revascularization procedure for coronary artery disease; however, early graft failure remains a concern affecting patient outcomes. Objective: To assess early graft patency following CABG using multislice CT angiography and to identify factors associated with graft occlusion or dysfunction. Methodology: This was a cross-sectional analytical study conducted at AFIC/NIHD, Rawalpindi from march 2022 to march 2023 including 280 patients who underwent coronary artery bypass grafting (CABG). Results: The mean age was 58.7 ± 9.6 years, with 70.0% males. Overall graft patency was 82.9%, with 10.0% showing significant stenosis and 7.1% occluded. Arterial grafts had higher patency (90.7%) compared to venous grafts (70.4%). Diabetes (19.7% vs 14.5%, p=0.018), smoking (19.0% vs 14.8%, p=0.026), and age >65 years (25.7% vs 14.8%, p=0.041) were significantly associated with graft dysfunction. Venous graft use (AOR = 3.42), diabetes (AOR = 1.88), smoking (AOR = 1.76), and advanced age (AOR = 1.69) were independent predictors. Conclusion: Early graft patency is favorable following CABG; however, graft dysfunction is significantly influenced by graft type and patient-related risk factors. Multislice CT angiography is an effective modality for early postoperative evaluation, and targeted risk factor modification may improve outcomes.

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