[Closed mitral commissurotomy in the surgical treatment of complicated mitral stenosis].

Under analysis was an experience with closed mitral commissurotomies (CMCT) in 865 patients. Among them 285 patients had mitral stenosis complicated by calcinosis, thrombosis of the left auricle, mitral insufficiency of the I-II degree or by a previously done commissurotomy. CMCT was shown to be possible and sometimes even necessary in spite of the presence of aggravating factors.