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• W2551805780 abstract "Chronic severe aortic regurgitation (AR) imposes significant volume and pressure overload on the left ventricle (LV), but such patients typically remain in an asymptomatic state for a very long time. This study sought to examine long-term outcomes in a contemporary group of patients with grade III+ chronic AR and preserved left ventricular ejection fraction (LVEF) and the value of aortic valve (AV) surgery on long-term survival. We also wanted to reassess the threshold of LV dimension, beyond which mortality significantly increases. The authors studied 1,417 such patients (mean 54 ± 16 years of age, 75% men) seen between 2002 and 2010. Clinical data were obtained and Society of Thoracic Surgeons (STS) score was calculated. The primary endpoint was mortality. Mean STS score was 5.5% ± 8%, and mean LVEF was 57 ± 4%, whereas 1,228 patients (87%) were asymptomatic, and 93 patients (7%) had indexed LV end-systolic dimension (iLVESD) ≥2.5 cm/m2. At 6.6 ± 3 years, 933 patients (66%) underwent AV surgery (36% isolated AV surgery, 16% concomitant coronary bypass, and 58% aortic replacement), and 262 patients (19%) died. In-hospital postoperative mortality was 2% (0.6% in isolated AV surgery). On multivariate Cox survival analysis, compared to the group of iLVESD <2.5 cm/m2 and no AV surgery, the 2 groups of iLVESD <2.5 cm/m2 with AV surgery and iLVESD ≥2.5 cm/m2 with AV surgery were associated with improved survival (hazard ratios: 0.62 and 0.42, respectively; both p < 0.01). Survival of patients who underwent AV surgery was similar to that of an age- and sex-matched U.S. population with 96% of deaths occurring in those with iLVESD <2.5 cm/m2. At a high-volume experienced center, patients with grade III or greater AR and preserved LVEF demonstrated significantly improved long-term survival following AV surgery. The risk of death significantly increased at a lower LV dimension threshold than previously described." @default.
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• W2551805780 date "2016-11-01" @default.
• W2551805780 modified "2023-10-18" @default.
• W2551805780 title "Long-Term Outcomes in Patients With Aortic Regurgitation and Preserved Left Ventricular Ejection Fraction" @default.
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• W2551805780 doi "https://doi.org/10.1016/j.jacc.2016.08.045" @default.
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