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Ann Thorac Surg 2001;71:543-548
© 2001 The Society of Thoracic Surgeons
a Department of Cardio-Thoracic Surgery, Juntendo University, Tokyo, Japan
Accepted for publication July 6, 2000.
Address reprint requests to Dr Hosoda, Department of Cardio-Thoracic Surgery, Juntendo University, 3-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
e-mail: yhosoda{at}med.juntendo.ac.jp
Background. The presence of diabetes mellitus adversely affects the late survival of patients undergoing coronary artery bypass grafting (CABG). The purpose of this study is to clarify the role of diabetic nephropathy on outcomes of a group of patients on chronic hemodialysis undergoing CABG.
Methods. Between April 1984 and July 1999, 45 patients on chronic hemodialysis underwent CABG. Forty-three had conventional CABG and 2 had off-pump CABG. There were 37 males and 8 females, and the mean age was 57 years (43 to 76 years). Twenty-one patients had diabetic nephropathy (group D) and 24 had nondiabetic nephropathy (group ND). Early and late results were determined in both groups.
Results. Early outcome was not significantly different between the groups. There was no hospital mortality, stroke, or requirement for prolonged mechanical ventilation (>24 hours) in either group. No patients in group D, and only 1 (4.2%) in group ND had low cardiac output syndrome. The difference in the incidence of arrhythmias (23.8% in group D and 25% in group ND), wound infections (9.5% in group D and 8.3% in group ND), and delayed tamponade (5% in group D and 12.5% in group ND) was not statistically significant. However, late results differed significantly between the two groups. Actuarial survival (Kaplan-Meier) at 5 and 9 years was 22.9% and 11.5% in group D and 89.1% and 45.7% in group ND (p = 0.01), respectively. Similarly, the cardiac event-free rate at the same intervals was 50.4% and 0% for group D and 100% and 65.8% for group ND (p = 0.001), respectively.
Conclusions. Using present technology, CABG can be done in patients on chronic hemodialysis with acceptable early mortality and morbidity. Late results in patients with diabetic nephropathy on hemodialysis are not as favorable as their nondiabetic cohort.
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