EP28 PRIMARY MITRAL VALVE REGURGITATION: A retrospective analysis of mitral valve surgery and long term follow-up.

Abstract Background and aim: Surgery of mitral valve is one of the most evolving topic, especially for repair techniques and is often challenging for surgeons. We retrospectively evaluate the results of mitral valve repair (MVRep) or replacement (MVR) in primary MR. Methods: 165 consecutive patients (mean age 65 ± 12.5 years) between January 2014 and December 2018 underwent MVRep (89 pts, 54%) or MVR (76 pts, 46%). Mean EuroSCORE II was 3 ± 2%. 89 pts were severely symptomatic for dyspnea (53.9%). In all cases of MVRep a prosthetic ring was implanted; adjunctive procedure were a triangular (11%) or quadrangular resection (11%) and edge to edge (24%). A mechanical prosthesis were implanted in 60 pts (36%). Mean follow-up (95% complete, 157 patients) was 50.2 ± 17.9 months. Results: Overall in hospital mortality was 4.8%; 1.1% (1pts) and 9.2% (7 pts) for MVRep and MVR respectively. Three of these 8 patients were octogenarian and at high risk surgery with an EuroSCORE II>7%. Follow-up mortality was 6.3% (10 pts), cardiac death was 3.8%. 6 years survival was 90.7 ± 3%. Three patients (MVRep) underwent MVR for MR recurrence with a 6 years freedom from reoperation of 97.9 ± 1.2%. Freedom from symptoms was 89.6 ± 3.2%. No significantly differences was found between MVRep and MVR in terms of survival (logRank test, p = 0.61), reoperation (logRank test, p = 0.138) and symptoms (logRank test, p = 0.264). Conclusioni: MVRep appears to have lower in-hospital mortality than MVR (p = 0.025). Long term results showed excellent survival and comparable outcomes in terms of reintervention and relief of symptoms between MVRep and MVR. © 2018 Italian Federation of Cardiology - I.F.C. All rights reserved.