Abstract
Between January 2001 and December 2011, 971 consecutive patients underwent isolated coronary artery bypass grafting (CABG) in our institution. These patients included 123 patients with impaired renal function (serum creatinine ≥1.5 mg/dl). These patients were divided into 2 groups, hemodialysis (HD) group and impaired renal function without hemodialysis (non HD) group. The average age at operations was significantly younger in HD group (65.5±9.1 vs 68.8±8.3: p=0.03 ). The ratio of off pump CABG was lower in HD group (83.1% vs 95.3%: p=0.03). The operative mortality and the in-hospital mortality rates (HD vs non HD) were 1.7% vs 1.6%, and 3.4% vs 6.3% respectively (p=n.s). Overall survival and freedom from cardiac events were not statistically significantly different between the two groups. Although freedom form cardiac death was significantly lower in non HD group (1 year; 92.3% vs 98.4%, 3 years; 82.8% vs 98.4%, 5 years; 61.4% vs 98.4% p<0.05), overall survival was not significantly different in both group (1 year: 85.1% vs 88.5%, 3 years 68.7% vs 69.3%, 5 years 45.4% vs 64.0%). Careful observation after operation not only for cardiovascular disease but also other diseases is considered to be important in patients with impaired renal function.
