RESUMO
The study included 80 patients divided into three groups according to the severity of MVI [trivial, mild and moderate]. All the studied patients had no obvious organic MV lesions and underwent mechanical aortic valve replacement. Pre- and postoperative echo evaluated severity of MVI, mitral annular area and LV EDD, ESD. There was marked improvement in the clinical status after AVR in 78 [97.5%] patients. There was a general improvement in the seventy of MVI. In univariate analysis, there was no significant statistical effect in correlation of the changes in the severity of MVI to the studied variables as age, mitral annular area and LV dimensions. However, there was a significant statistical change in the mitral annular area in all studied groups from pre- to postoperative measures. At the last period of follow up there was improvement in the left ventricular dimensions, but was not significant statistically from pre- to postoperative measurements, especially in LVEDD. There was no incidence of valve thrombosis or endocarditis