Congenital mitral regurgitation from absence of the anterolateral papillary muscle
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Updated: Oct 4, 2026

An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat
Published on: May 19, 2020
K Hashimoto1, M Oshiumi, H Takakura
1Department of Cardiovascular Surgery, Saitama Cardiovascular and Respiratory Center, Osato-gun, Japan. drs-hashimoto@mti.biglobe.ne.jp
Abstract:
A 21-year-old woman had congenital mitral regurgitation. Echocardiography showed absence of the anterolateral papillary muscle and corresponding marginal chordae. This rare abnormality was corrected by anterolateral commissural annuloplasty and insertion of artificial chordae to prevent prolapse of the anterior leaflet. Postoperatively, there was no regurgitation, and an appropriate mitral valve area was achieved.
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