Aims: The aim of this study is 2D Echocardiographic evaluation of left ventricular diastolic function after closed mitral valvotomy in rheumatic mitral stenosis. Settings and Design: This was a single centre one-year comparative study consisting of twenty nine patients of rheumatic severe mitral stenosis. Methods and Material: We analyzed preoperative and post operative transthoracic 2D echocardiographic parameters of diastolic function and compared both data to evaluate improvement of diastolic function in all patients who underwent closed mitral valvotomy. Statistical analysis used: The statistical analyses were performed on SPSS (Statistical Package for Social Sciences) Version 15.0 statistical Analysis Software. Categorical groups were compared by chi-square (x2) test. A two-sided (á=2) p value less than 0.05 (p<0.05) was considered statistically significant. Results: All the twenty nine patients underwent successful surgeries. In perioperative and follow up, there was no incidence of Mitral regurgitation and thromboembolic incident. There was no mortality. Conclusions: Surgical closed mitral valvotomy produces excellent and comparable early hemodynamic improvement, significant improvement in clinical stage of disease and improvement in diastolic function.

Key-words: Two Dechocardiography; Rheumatic Mitral Stenosis; Diastolic Function; Closed Mitral Valvotomy (CMV).