title: Redo mitral valve replacement using the valve-on-valve method.
abstract: Despite improvements in bioprosthetic valve function, increased human life-expectancy has led to a growing number of bioprosthetic valve deterioration cases requiring reoperation. We report 2 cases of primary tissue failure of a bioprosthetic valve, which were treated by mitral valve replacement using the valve-on-valve method. The reasons for the reoperations were a severely calcified valve annulus, and severe adhesion of a previous bioprosthetic valve. We removed only the leaflets of the bioprosthetic valve and sutured a Carbomedics OptiForm valve onto the sewing cuff of the previous bioprosthesis. No complications, including major cardiac events, were noted during the follow-up.
authors.affiliation: Department of Cardiovascular Surgery, Seirei Hamamatsu General Hospital, Hamamatsu, Japan sa_msa_m@yahoo.co.jp.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Miyairi
authors.affiliation: Department of Cardiovascular Surgery, Seirei Hamamatsu General Hospital, Hamamatsu, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Koide
authors.affiliation: Department of Cardiovascular Surgery, Seirei Hamamatsu General Hospital, Hamamatsu, Japan.
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Kunii
authors.affiliation: Department of Cardiovascular Surgery, Seirei Hamamatsu General Hospital, Hamamatsu, Japan.
authors.forename: Kazumasa
authors.initials: K
authors.lastname: Tsuda
authors.affiliation: Department of Cardiovascular Surgery, Seirei Hamamatsu General Hospital, Hamamatsu, Japan.
authors.forename: Yuko
authors.initials: Y
authors.lastname: Ohashi
authors.affiliation: Department of Cardiovascular Surgery, Seirei Hamamatsu General Hospital, Hamamatsu, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Harada
mesh_terms: D000368:Aged; D001705:Bioprosthesis; D005260:Female; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000601:surgery*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation
keywords: Heart valve prosthesis implantation; mitral valve; prosthesis failure; reoperation; suture techniques