Prevalence, clinical characteristics, and outcome of atrial functional mitral regurgitation in hospitalized heart failure patients with atrial fibrillation

Journal of cardiology
Chihiro SaitoNobuhisa Hagiwara

Abstract

Functional mitral regurgitation (MR) caused by reduced left ventricular ejection fraction (EF) and tethering, termed ventricular functional MR (VFMR), is associated with worse outcomes. Atrial functional MR (AFMR) caused by left atrial enlargement and annular dilatation was also recently described in patients with atrial fibrillation (AF). However, the clinical profiles of AFMR in hospitalized heart failure (HF) patients are unclear. We investigated the prevalence, clinical characteristics, and prognosis of AFMR in hospitalized HF patients with AF. We analyzed 189 hospitalized HF patients with AF. The prevalence, clinical characteristics, and prognosis were compared between 4 groups: patients with EF ≥50% and no/mild MR (pEFnoMR), patients with EF <50% and no/mild MR (rEFnoMR), patients with EF ≥50% and moderate/severe MR (AFMR), and patients with EF <50% and moderate/severe MR (VFMR). The prevalence of AFMR was 15.9% in hospitalized HF patients with AF. AFMR patients were older and more likely to have an enlarged left atrium, lower tenting height, and moderate/severe tricuspid regurgitation than VFMR patients. There were no differences in all-cause death after discharge among pEFnoMR, rEFnoMR, and AFMR patients. AFMR patients ...Continue Reading

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Nov 16, 2019·Journal of Echocardiography·Yukio AbeToshihiko Shibata
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