[Open mitral valvuloplasty under cardiopulmonary bypass. Report of 24 cases]

24 cases of open mitral-valvuloplasty were reported. The clinical date are back from October 1980 to July 1987. Operative technique, indication and contraindication are discussed. By preserving autovalvular tissue in site, some complications and the deterioration of the artificial valves can be avoided. One patient died postoperatively. The survivals were followed-up 3 months to 6.5 years (average 3.1 years). The authors considered that careful selection of patients, myocardial protection, and accurate manipulation of the operation are important factors of success.