Abstract
We compared the 1-year outcome of coronary revascularization with sirolimus-eluting stents (SESs) or coronary artery bypass grafting (CABG) for coronary artery disease involving the left anterior descending artery (LAD) in diabetic patients according to their retinal status: no diabetic retinopathy (NDR) and diabetic retinopathy (DR). Between April 2004 and October 2005, 220 consecutive patients with coronary artery disease involving the LAD underwent implantation of SESs; of these, 25 patients had NDR and 54 had DR. For each group, we included a comparison group of diabetic patients who had undergone CABG and had the same retinal status. During 1 year after revascularization, five cardiac events (cardiac death, myocardial infarction, and repeat revascularization) were noted in NDR-SES patients, four in NDR-CABG, 24 in DR-SES, and eight in DR-CABG patients. Most cardiac events were repeat revascularizations. Kaplan-Meier estimates of the incidence of cardiac events at 1 year were 21.1%, 11.4%, 44.0%, and 14.0%, respectively. Kaplan-Meier curves for cardiac events in SES patients were different from those of CABG patients for the DR group (p = 0.003), but not NDR groups. After adjustments for the potential confounders, the hazard ratio of cardiac events in DR-SES patients was 2.8 (95% confidence interval, 1.1 to 6.9; p = 0.02). Compared with SES implantation, CABG is more suitable for revascularization in patients with coronary artery disease involving the LAD and DR.
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