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• W2103758001 abstract "Impaired left atrial (LA) deformation is noted in patients with severe primary mitral regurgitation (MR), but its prognostic value is unknown. The aim of this study was to investigate the prognostic significance of LA deformation parameters in patients with chronic severe primary MR.A total of 104 patients with asymptomatic chronic severe primary MR (Carpentier type II) and preserved left ventricular systolic function were prospectively recruited. Global peak positive strain of the left atrium (LASp) and strain rate in the LA filling phase (LASRr) as well as strain rate in the LA conduit phase were identified using two-dimensional speckle-tracking echocardiography.During a mean follow-up period of 13.2 ± 9.5 months, 22 patients reached a composite end point of death and mitral valve repair or replacement prompted by heart failure development. Among the clinical and echocardiographic parameters, LV end-systolic volume index (19.5 ± 9.5 vs 15.7 ± 6.3 mL/m(2), P = .028), LASp (22.7 ± 10.4% vs 27.2 ± 9.1%, P = .049), and LASRr (1.97 ± 0.6 vs 2.33 ± 0.6 1/sec, P = .013) varied between the two groups in terms of end points but not age, LA volume index, left ventricular ejection fraction, pulmonary artery systolic pressure, and presence of atrial fibrillation. After multivariate analysis, low LASp (odds ratio, 3.606; 95% CI, 1.294-10.052; P = .014) and low LASRr (odds ratio, 2.857; 95% CI, 1.078-7.572; P = .035) remained powerful outcome indicators.In patients with asymptomatic severe primary MR, reduced LASp and LASRr predicted a worse prognosis. These findings may offer additional information to guide early surgery." @default.
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• W2103758001 date "2015-11-01" @default.
• W2103758001 modified "2023-09-30" @default.
• W2103758001 title "Predictive Value of Left Atrial Deformation on Prognosis in Severe Primary Mitral Regurgitation" @default.
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• W2103758001 doi "https://doi.org/10.1016/j.echo.2015.07.004" @default.
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