Effect of preoperative hemoglobin A1c levels on long-term outcomes for diabetic patients after off-pump coronary artery bypass grafting

SummaryBackgroundDiabetes mellitus is an independent risk factor for cardiovascular events after coronary artery bypass grafting (CABG), and hemoglobin A1c (HbA1c) is the most convenient marker for monitoring glycemic control among diabetic patients. However, few studies have reported the impact of baseline HbA1c levels on outcomes for diabetic patients after CABG. This study therefore aimed to investigate whether preoperative HbA1c levels in diabetic patients are predictive of long-term outcomes after off-pump CABG (OPCAB).Methods and resultsOf 893 patients undergoing primary isolated OPCAB at Juntendo University Hospital from July 2002 to December 2007, subjects comprised 306 diabetic patients