Treatment of Coronary Artery Disease in Hemodialysis Patients Evaluated for Transplant—A Registry Study


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Abstract

Background.We assessed the results of a noninvasive therapeutic strategy on the long-term occurrence of cardiac events and death in a registry of patients with chronic kidney disease (CKD) and coronary artery disease (CAD).Methods.We analyzed 519 patients with CKD (56±9 years, 67% men, 67% whites) on maintenance hemodialysis with clinical or scintigraphic evidence of CAD by using coronary angiography.Results.In 230 (44%) patients, coronary angiography revealed significant CAD (lumen reduction≥70%). Subjects with significant CAD were kept on medical treatment (MT; n=184) or referred for myocardial revascularization (percutaneous transluminal coronary angioplasty/coronary artery bypass graft—intervention; n=30) according to American College of Cardiology/American Heart Association guidelines. In addition, 16 subjects refused intervention and were also followed-up. Event-free survival for patients on MT at 12, 36, and 60 months was 86%, 71%, and 57%, whereas overall survival was 89%, 71%, and 50% in the same period, respectively. Patients who refused intervention had a significantly worse prognosis compared with those who actually underwent intervention (events: hazard ratio=4.50; % confidence interval=1.48–15.10; death: hazard ratio=3.39; % confidence interval 1.41–8.45).Conclusions.In patients with CKD and significant CAD, MT promotes adequate long-term event-free survival. However, failure to perform a coronary intervention when necessary results in an accentuated increased risk of events and death.

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