Abstract
The aim of this study was to compare the short- and long-term outcomes of CABG in diabetes mellitus (DM) patients according to eGFR. A total of 573 DM patients receiving CABG between 1997 and 2012 were stratified according to preoperative eGFR: normal or mild chronic kidney disease (CKD), eGFR ≥60 ml/min/1.73 m(2); moderate CKD, eGFR 30-60 ml/min/1.73 m(2); severe CKD, eGFR <30 ml/min/1.73 m(2); and severe CKD requiring hemodialysis (HD). Off-pump and bilateral internal thoracic artery (BITA) grafting rates were 83.4 and 62.3%, respectively. Mediastinitis and in-hospital mortality rates were both 1.4%. On logistic regression analysis, preoperative congestive heart failure and CKD severity were independent predictors of postoperative renal failure and major complications. The mean follow-up period was 5.7 years (range, 0-15.5 years). Estimated 5-year survival (92.9±1.6%, 82.8±3.3%, and 47.3±7.0%, respectively, P<0.001) significantly decreased with declining kidney function. On Cox hazard modeling, CKD severity was an independent predictor of major cerebrocardiovascular events (normal/mild: hazard ratio [HR], 1; moderate: HR, 1.35; severe: HR, 1.83; HD: HR, 2.0, P=0.016) and of overall survival (normal/mild: HR, 1; moderate: HR, 1.65; severe: HR, 5.96; HD: HR, 10.93, P<0.001). BITA grafting was a strong protective factor for overall survival (HR, 0.63; P=0.022). In DM patients, early- and long-term outcomes after CABG are strongly influenced by CKD progression.
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More From: Circulation journal : official journal of the Japanese Circulation Society
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