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Background: Balloon mitral valvuloplasty was introduced in 1984 by Inoue et al and is currently considered the method of choice in the treatment of mitral stenosis. Objective: To compare results of mitral valvuloplasty in patients with mitral stenosis with subvalvular impairment ≥3 and <3. Methods: Retrospective study with 104 patients undergoing mitral valvuloplasty with Inoue balloon. Patients were stratified into two groups: subvalvular impairment (SVI) ≥3 and SVI <3. The immediate results were compared at 12 months and 24 months or more between the groups with data obtained by echocardiography and hemodynamic study. Results: The immediate results revealed success in both groups, with statistical significance pre/post-procedure regarding the echocardiographic and hemodynamic parameters and no significant differences between groups. Echocardiographic results at 12 months showed that the mean gradient and the valve area were similar and not statistically significant between the groups, the same occurring in the comparison of echocardiographic results at 24 or more months. Conclusion: The results obtained with mitral valvuloplasty with Inoue balloon did not differ both in patients with subvalvular impairment ≥3 and <3.

Severity of Subvalvular Impairment in the Results of Mitral Valvuloplasty with Inoue Catheter