Multivessel coronary revascularization in patients with and without diabetes mellitus: 3-year follow-up of the ARTS-II (Arterial Revascularization Therapies Study-Part II) trial.

OBJECTIVES The purpose of this study was to assess the 3-year outcome of coronary artery bypass graft surgery (CABG) and percutaneous coronary intervention (PCI) using sirolimus-eluting stents (SES) in patients who had multivessel coronary artery disease with and without diabetes mellitus. BACKGROUND The optimal method of revascularization in diabetic patients remains in dispute. METHODS The ARTS-II (Arterial Revascularization Therapies Study-Part II) trial is a single-arm study (n = 607) that included 159 diabetic patients treated with SES whose 3-year clinical outcome was compared with that of the historical diabetic and nondiabetic arms of the randomized ARTS-I trial (n = 1,205, including 96 diabetic patients in the CABG arm and 112 in the PCI arm). RESULTS At 3 years, among nondiabetic patients, the incidence of the primary composite of death, CVA, myocardial infarction (MI), and repeat revascularization (major adverse cardiac and cerebrovascular events [MACCE]), was significantly lower in ARTS-II than in ARTS-I PCI (adjusted odds ratio [OR]: 0.41; 95% confidence interval [CI]: 0.26 to 0.64) and similar to ARTS-I CABG. The ARTS-II patients were at significantly lower risk for death, CVA, and MI as compared with both the ARTS-I PCI (adjusted OR: 0.55; 95% CI: 0.34 to 0.91) and ARTS-I CABG patients (adjusted OR: 0.56; 95% CI: 0.35 to 0.92). Among diabetic patients, the incidence of MACCE in ARTS-II was similar to that of both PCI and CABG in ARTS-I. Conversely, the incidence of death, CVA, and MI was significantly lower in ARTS-II than in ARTS-I PCI (adjusted OR: 0.67; 95% CI: 0.27 to 1.65) and was similar to that of ARTS-I CABG. CONCLUSIONS At 3 years, PCI using SES for patients with multivessel coronary artery disease seems to be safer and more efficacious than PCI using bare-metal stents, irrespective of the diabetic status of the patient. Hence, PCI using SES appears to be a valuable alternative to CABG for both diabetic and nondiabetic patients.