Mitral valve procedure in dilated cardiomyopathy: Repair or replacement?

Background. Mitral valve (MV) procedure for dilated cardiomyopathy is becom ing popular. We analyzed the indications to MV repair or replacement accord ing to our 10-year experience. Methods. From January 1990 to May 2000, 49 patients with dilated cardiomyop athy (12 idiopathic and 37 ischemic) underwent MV operation, 29 repair and 20 replacement. Preoperative evaluation included measurement of MV coaptati on depth (CD) as a mirror of the abnormalities of MV apparatus leading to f unctional mitral regurgitation. Results. Thirty-day mortality was 4.2% (2 patients). One-, 3-, 5-, and 10-y ear actuarial survival was, respectively, 90%, 87%, 78%, and 73%. The possi bility of survival with at least one New York Heart Association functional class improvement was 88%, 76%, 71%, and 65%. Return of functional mitral r egurgitation after MV repair was nearly inevitable; however, using a scale from 0 to 4, mean postoperative functional mitral regurgitation was 1.2 +/- 0.8 when preoperative MVCD was 10 mm or less and 2.5 +/- 0.7 when preopera tive MVCD was 11 mm or higher (p < 0.05). Globally, functional results were not influenced by the strategy of treatment (MV repair or replacement). Conclusions. Mitral valve operation can give satisfying survival and good p alliation of dilated cardiomyopathy. The MVCD can be helpful in the choice of the surgical strategy on the MV. (C) 2001 by The Society of Thoracic Sur geons.