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  • Title: Five-Year Outcome After Off-Pump or On-Pump Coronary Artery Bypass Grafting in Elderly Patients.
    Author: Diegeler A, Börgermann J, Kappert U, Hilker M, Doenst T, Böning A, Albert M, Färber G, Holzhey D, Conradi L, Rieß FC, Veeckmann P, Minorics C, Zacher M, Reents W.
    Journal: Circulation; 2019 Apr 16; 139(16):1865-1871. PubMed ID: 30732456.
    Abstract:
    BACKGROUND: The 30-day and 1-year follow-up analysis of the GOPCABE trial (German Off-Pump Coronary Artery Bypass Grafting in Elderly Patients) revealed no significant difference in the composite end point consisting of death, stroke, myocardial infarction, new renal replacement therapy, or repeat revascularization. The 5-year follow-up data of this trial are reported here. METHODS: From June 2008 to September 2011, a total of 2539 patients aged ≥75 years were randomly assigned to undergo off-pump or on-pump coronary artery bypass grafting (CABG) at 12 centers in Germany. The primary outcome was all-cause mortality at 5 years. The secondary 5-year outcomes were a composite of death, myocardial infarction, and repeat revascularization. Furthermore, the impact of complete versus incomplete revascularization was assessed. RESULTS: After a median follow-up of 5 years, 361 patients (31%) assigned to off-pump CABG and 352 patients (30%) assigned to on-pump CABG had died (hazard ratio off-pump/on-pump CABG, 1.03; 95% CI, 0.89-1.19; P=0.71). The composite outcome of death, myocardial infarction, and repeat revascularization occurred in 397 (34%) after off-pump and in 389 (33%) after on-pump CABG (hazard ratio, 1.03; 95% CI, 0.89-1.18; P=0.704). Incomplete revascularization occurred in 403 (34%) patients randomly assigned to off-pump and 354 (29%) patients randomly assigned to on-pump CABG ( P<0.001). Five-year survival rates were 72% (95% CI, 67-76) with incomplete versus 76% (95% CI, 74-80) with complete revascularization (log-rank test: P=0.02) after off-pump CABG and 72% (95% CI, 67-76) versus 77% (95% CI, 74-80) after on-pump CABG (log-rank test: P=0.03), respectively. Cox regression analysis revealed a hazard ratio incomplete/complete revascularization of 1.19 (95% CI, 1.01-1.39; P=0.04). CONCLUSIONS: In elderly patients ≥75 years of age, the 5-year survival rates and the combined outcome of death, myocardial infarction, and repeat revascularization, as well, were similar after on-pump and off-pump CABG. Incomplete revascularization was associated with a lower 5-year survival rate, irrespective of the type of surgery. CLINICAL TRIAL REGISTRATION: URL: https://www.clinicaltrials.gov . Unique identifier: NCT00719667.
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