[Medium term results of commissurotomies and mitral plasties in open heart surgery. Apropos of 50 cases].

The authors report on 50 cases of mitral commissurotomies in open heart surgery. The operations were performed during a short by-pass with hemodilution. The procedure involved the sub-valvular system in more than half the cases. There was no operative death. 41 patients were seen again regularly. The results were deemed excellent in 24 cases, good in 8, average in 6 and bad in one. On the basis of this experience, the authors think it preferable to perform commissurotomies by sight.