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CABG, as compared with PCI with drug-eluting stents, significantly reduced the long-term risk of mortality in nondiabetic patients with multivessel CAD.

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We investigated whether intensive glucose control after percutaneous coronary intervention (PCI) improves clinical outcomes in diabetic patients. From the Grand-DES registry, we analyzed 2576 diabetic patients (median age 66 years, male 65.6%) who underwent PCI and had at least 2 records of HbA1c during the follow-up. Patients were categorized according to the mean HbA1c (≥7% or <7%). Primary outcome was major adverse cardiovascular event (MACE), a composite of cardiac death, non-fatal myocardial infarction, and any revascularization. During a median follow-up of 33.6 months, MACE occurred in 335 (13.0%) patients. Intensive glucose control with follow-up mean HbA1c < 7.0% (42.2%; n = 1087) was not associated with lower risk of MACE, compared to control with mean HbA1c ≥ 7.0% (adjusted hazard ratio [aHR] [95% confidence interval] 1.06 [0.82–1.37], p = 0.672). In subgroup analysis, patients with sustained HbA1c of <7.0% throughout the follow-up were not associated with a lower risk of MACE compared to those with sustained HbA1c of ≥7.0% (aHR 1.15 [0.71–1.89], p = 0.566). More intensive glucose control with mean HbA1c ≤ 6.5% was not associated with lower risk of MACE, compared to loose control with a mean HbA1c ≥ 8.0% (aHR 1.15 [0.71–1.86], p = 0.583). Intensive glucose control after PCI was not associated with better clinical outcomes in diabetic patients undergoing PCI than lenient control.