Long-term results of open mitral valve reconstruction for XXXX .

@entity1 @entity460 @entity4794
Open mitral reconstruction for @entity4794 ( @entity4794 ) was performed in 120 @entity1 , 101 @entity1 and 19 @entity1 , aged 22 to 75 years (mean 49). Nine @entity1 were functional class II, 106 class III, 5 class IV; 13 only underwent noninvasive studies, including echocardiography, before surgery, while 107 had preoperative cardiac catheterization studies. The latter showed a mean valve area of 1.09 cm2 and a pulmonary artery wedge to left ventricular mean diastolic gradient of 14 mm Hg. Cardiopulmonary bypass was used in all @entity1 for open reconstruction under direct vision. Superior commissurotomy was done in 115 @entity1 , inferior in 114, papillary muscles were incised and chordae lengthened in 39 and @entity460 was excised from valve leaflets in 23. Suture or ring anuloplasty was not required in any @entity1 . The series was begun January 1972 and terminated in January 1984. Personal follow up was conducted in July 1984. There were no operative deaths in the 120 @entity1 . There were 5 late deaths, all from noncardiac causes. The mean follow-up time was 53 months. The actuarial probability of survival at 10 years was 95 +/- 2%. Thromboemboli occurred in 9 @entity1 ; the probability of freedom from thromboemboli at 10 years was 91 +/- 3% and the linearized rate was 1.8%/ @entity1 -year of follow-up. Reoperation was required in 9 @entity1 , an absolute incidence of 7.5% and an annual incidence of 1.7%/ @entity1 year. At 10 years the probability of freedom from reoperation was 84 +/- 5%.
