[Analysis of the causes of unsuccessful surgery of mitral valve stenosis].
D000293:Adolescent; D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000401:mortality / Q000601:surgery*; D011183:Postoperative Complications