COMPARISON OF PROPENSITY SCORES FOR SURGICAL TREATMENT OF BIOPROSTHETIC MITRAL VALVE DYSFUNCTION USING TRADITIONAL AND “VALVE-IN-VALVE” METHODS

Highlights The article describes the first conducted pseudorandomized comparative study of mitral valve replacement using either traditional or “valve-in-valve” techniques. Abstract Aim. To compare short-term (perioperative) and medium-term (6 months) outcomes surgical treatment bioprosthetic dysfunction methods. Methods. included 18 patients undergoing (open replacement) chosen according to following criteria: heart disease type, predominant type defect, age, gender, severity presence concomitant pathology 1:1 matching on propensity score. Results. No perioperative mortality was noted in both groups. cardiopulmonary bypass cross-clamping aorta time significantly lower group. Comparison echocardiographic parameters revealed a decrease mean pulmonary arterial pressure gradient, size chambers peak transvalvular gradient were “traditional” There no cases patient-prosthesis mismatch. In mid-term period, groups presented with functional class failure. Conclusion. Bioprosthetic technique provides comparable clinical hemodynamic results compared periods, reduces aortic cross clamping time.