Re-Mitral Valve Replacement (MVR) for Severe Mitral Regurgitation due to Retraction of a Mosaic Porcine Bioprosthesis Valvefs Leaflet in the First Year of MVR

(Department of Cardiovascular Surgery, Rakuwakai Otowa Hospital, Kyoto, Japan)

Masahira Fukuoka Toshifumi Takeuchi
A 70-year-old man received a mitral valve replacement (MVR) using a Mosaic valve for mitral regurgitation with valve tethering due to ischemic cardiomyopathy a year previously. Echocardiogram demonstrated mitral prosthetic valve regurgitation due to fixed leaflet 6 months ago. Despite medical treatment, he complained of dyspnea and renal function worsened. Therefore, he underwent re-MVR in the first year of MVR. We replaced the mitral valve with mechanical valve via right thoracotomy. Severe pannus growth was found in a non-coronary cusp corresponding to the posterior leaflet of the mitral valve. The bioprosthetic valve leaflet was folded and compacted by the pannus that covered the outflow surface of the leaflet.
  Jpn. J. Cardiovasc. Surg. 38:201-204i2009j