Impact of complete revascularization in coronary artery bypass grafting for ischemic cardiomyopathy

ObjectiveIn patients with ischemic cardiomyopathy, coronary artery bypass grafting ensures better survival than medical therapy. However, the long-term clinical impact of complete revascularization remains unclear. This observational study aimed to evaluate effects on and left ventricular functional recovery in cardiomyopathy undergoing grafting.MethodsWe retrospectively reviewed outcomes 498 who underwent (n = 386) or incomplete 112) myocardial between 1993 2015. The baseline characteristics were adjusted using inverse probability treatment weighting reduce bias potential confounding. mean follow-up duration was 77.2 ± 42.8 months survivors.ResultsThe overall 5-year rate (complete revascularization, 72.5% vs 57.9%, P .03) freedom from all-cause death and/or readmission due heart failure (54.5% 40.1%, .007) significantly greater those revascularization. After adjustments weighting, group demonstrated a lower risk (hazard ratio, 0.61; 95% confidence interval, 0.43-0.86; .005) composite adverse events 0.59; 0.44-0.79; < .001) improvement ejection fraction 1-year postoperatively (absolute change: 11.0 11.9% 8.3 11.4%, interaction effect .05) group.ConclusionsIn grafting, associated should be encouraged whenever possible.