IntroductionMitral regurgitation (MiR) is a very common valvular disease. Surgical treatment improves patients’ prognosis and quality of the life. Traditional mitral valve replacement was mostly substituted by mitral valve repair which improved early and log-term survival. The aim of our study was to assess results of mitral valve surgery in our department. Patients and methodsRetrospective study of data from cardiac operations registry was performed. From January 2009 to December 2014 seven hundred eighty six patients with mitral valve regurgitation were operated on. There were 471 men and 315 women, 78.9% of them were in NYHA class II or III. Functional etiology of MiR was in 56.4% patients mainly as a consequence of coronary artery disease, structural deterioration of the valve was in 43.6% mainly due to degenerative disease. ResultsMitral valve repair was performed in 78.0% of patients; in rest of the patients the mitral valve was replaced mainly with bioprosthesis. Combined procedure involving particularly coronary artery bypass grafting and/or, tricuspid valve repair and/or MAZE procedure was performed in 59.5% patients. The most frequent postoperative complication was new onset of atrial fibrillation in 34.8% of the patients. Low cardiac out syndrome occurs in 20.7%. Thirty eight patients (4.8%) died within 30 days after operation. ConclusionSurgical approach is a method of choice in treatment of significant MiR. Mitral repair is preferred operation and its results are excellent provided that proper technique is tailored for the specific patient including miniinvasive approach. Since ischemic etiology is quite frequent coronary artery bypass grafting is common concomitant procedure. Tricuspid valve repair or MAZE belong to other common concomitant procedures. If complex combined procedure is necessary more frequent occurrence of cardiac and extra cardiac complications should be taken into account.