Long-term effects of the mean hemoglobin A1c levels after percutaneous coronary intervention in patients with diabetes

Background: There is controversy regarding the long-term effect of glycemic control on the clinical outcomes after percutaneous coronary intervention (PCI) in diabetes patients with coronary artery disease (CAD). We aimed to evaluate the long-term outcomes of patients with diabetes who underwent PCI, according to the mean hemoglobin A1c (HbA1c) level after PCI.Methods: We retrospectively evaluated 675 diabetes patients with CAD treated with PCI from 2010 to 2013. We categorized the study population into three groups based on the mean observed HbA1c levels during the follow-up duration, as follows: aggressive control (AC) group (HbA1c level Results: The mean HbA1c level of the AC group was significantly lower than that of the MC and UC groups (6.04±0.36% vs. 6.74±0.14% vs. 8.39±1.20%, pConclusion: Our study showed that intensive glycemic control (HbA1c level