P47 MITRAL VALVE RE–REPAIR THROUGH A RIGHT MINITHORACOTOMY

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Abstract Objective Recurrent mitral valve regurgitation after prior repair is usually treated with re–repair or replacement through a median sternotomy. We report our small initial experience with mitral valve re–repair through a repeated minimally invasive approach. Methods From July 2018 to November 2021, 10 patients (median age 52 years IQR 49–68; male 90%) underwent isolated mitral valve re–repair with a right mini–thoracotomy approach with peripheral arterial and venous cannulation. Median Euroscore II was 2.05 (IQR 2.03–2.54). Results The median time from the original operation to redo surgery was 4.7 (3.5–8.1) years. Median cardiopulmonary bypass and cross–clamp times were 128 (IQR 109–134) and 99.5 (IQR 81–112) minutes, respectively. Failure of previous mitral valve repair was mainly due to Gore–Tex chordal rupture (3 patients), annular detachment (3 patients), native chordal rupture (2 patients), and posterior leaflet prolapse (2 patients). Concerning the surgical terchnique, a complete mitral valve ring Corcym Memo 3D or 4D was used in 8 patients while additional repair techniques were needed 5 patients (PTFE neochords implantation, cleft or commissure closure). No conversion to full sternotomy and no reoperation for bleeding was necessary. Median ICU and hospital stay were 2.0 (IQR 2.0–2.0) and 7.5 (7.0–9.0) days respectively. Median follow up time was 3.5 (2.8–3.9) years. Neither deaths nor major postoperative complications occurred in the follow–up period. Conclusions In our experience, mitral valve re–repair can be an attractive option for patients with failure of previous mitral valve surgery and can be safely performed through a minimally invasive approach with good outcomes. Main advantages seem to be the avoidance of extensive surgical dissection, optimal valve exposure, and low risk of surgical complications.

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