[Re-operation of a mitral porcine bioprosthesis 22-years after implantation].

A 49-year-old female suffered from increasing dyspnea from 2004. She had undergone mitral valve replacement with Carpentier-Edwards 1st-generation standard porcine bioprosthesis due to mitral stenosis 22-years ago. The echocardiography and catheterization showed mitral stenosis and, regurgitation. Re-replacement of the mitral prosthetic valve with ATS (27 mm) valve and tricuspid annuloplasty with Edwards MC3 Ring were successfully performed. There was no case who underwent so long post operative period after initial implantation of fragile prosthetic valve.