2227Limited impact of concomitant coronary artery by-pass grafting on long-term outcomes after surgical aortic valve replacement: a nationwide propensity matched study

Abstract

Abstract Objective Coronary artery disease is a common comorbidity of aortic stenosis. Addition of coronary artery by-pass grafting (CABG) to surgical aortic valve replacement (SAVR) is viable solution for treating both. Modern era impact of concomitant CABG to long-term outcomes is however inadequately known. We set out to study long-term outcomes of patients with or without CABG added to SAVR. Methods Patients (excluding infective endocarditis) aged ≥50 years with isolated first-time SAVR with or without CABG in Finland between 2004–2014 (n=7060) were retrospectively studied using nationwide registries. Propensity score matching (1:1) was used to identify patients with comparable baseline features (n=2188 with and n=2188 without concomitant CABG). Outcomes were 10-year all-cause mortality, stroke, major bleeding and myocardial infarction. Median follow-up was 6.1 years. Results In matched population mortality after SAVR was comparable with or without CABG (31.0% vs. 32.7%; HR 1.05; CI 0.93–1.20; p=0.428). However, if CABG was performed solely with venous grafts mortality was higher (35.9%; HR 1.21; CI 1.02–1.43; p=0.030 vs. no-CABG). Myocardial infarction was more common in patients with CABG (13.4% vs. 6.9%; HR 1.62; CI 1.22–2.17; p=0.0008). Occurrence of stroke was comparable with or without CABG (15.1% vs. 13.5%; p=0.933). Rate on any major bleeding was also comparable (20.0% with vs. 21.9% without CABG; p=0.496). Gastrointestinal (8.1% vs. 10.3%; p=0.978) and intracranial bleeds (6.0% vs. 5.5%; p=0.383) were also comparable between study groups. Conclusions Matched patients with or without concomitant CABG had comparable long-term mortality, stroke and major bleeding rates after SAVR. Our results suggest that successful concomitant CABG has limited impact on long-term outcomes after SAVR. Acknowledgement/Funding Finnish Cardiac Society, Finnish Cultural Foundation, Governmental VTR-funding