[Experience with reoperation on mitral valve prostheses]

Heart valve replacement after closed mitral commissurotomy and mitral valve replacement with bioprostheses may result in complication and higher mortality and morbidity. Mitral valve replacement was performed in 32 cases after closed mitral commissurotomy and 12 cases after mitral valve replacement with bioprostheses from April 1986 to May 1994 in our hospital. The eraly mortality was 6.8% (3/42). The choice of operation and methods, myocardial preservation, measurement of heart resuscitation, and prevention of perioperative hemorrhage were discussed.