Abstract
Background: Although adaptive servo-ventilation (ASV) produces chronic improvement of left ventricular ejection fraction (LVEF) in patients with heart failure (HF), its impact on functional mitral regurgitation (FMR) has not been clarified. Methods: To investigate the effects of ASV on FMR, we measured left ventricle (LV)/atrial (LA) volumes, sphericity index (SI), and vena contracta width (VCW) in 20 HF patients at baseline and 3 months after ASV therapy. Patients were divided into two groups [continuous ASV therapy group (n=12) and withdrawal group (n=8, non-ASV group)].
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