Prognostic Factors Affecting Clinical Outcomes after Coronary Artery Bypass Surgery: Analysis of Patients with Chronic Kidney Disease after 5.9 Years of Follow-Up

Background: Coronary artery bypass grafting (CABG) is a highly successful treatment for prolonging the lives of selected patients; however, preoperative and postoperative renal dysfunction has been an important predictor of adverse cardiovascular events. Concerns have recently grown regarding chronic kidney disease (CKD), which is an independent risk factor for cardiovascular diseases. In the present study we examined the significance of renal function on the basis of the estimated glomerular filtration rate (eGFR) and analyzed other factors as predictors of long-term clinical outcomes after CABG. Methods: The subjects were 195 patients who underwent CABG from July 1996 through September 2008 at our hospital. Patients who received preoperative dialysis or who died during hospitalization or both were excluded. The patients were divided into 2 groups based on eGFR at the time of discharge (eGFR ≥60 mL/min/1.73 m2: non-CKD group; or eGFR