Abstract

The debate on the usefulness of the minimally invasive approach in mitral valve surgery is still open. The aim of this study is to describe a single-center case series of all comers undergoing minimally invasive mitral valve reconstruction. From 2010 to 2019, all the data recorded in the medical records of 893 consecutive patients undergoing mitral valve reconstruction through a right mini-thoracotomy were retrospectively collected. All patients were contacted by telephone for remote evaluation and integration of echocardiographic information on surgical results. Mean age was 62.2 ± 14.5; 447 (50%) were female and mean log EuroSCORE was 2.5 ± 2.8%. At a mean follow-up of 4.1 ± 2.2 years (median 3.9), a total of 24 deaths (2.68%) were recorded. Twenty-four patients required rehospitalization for cardiac causes, 13 (1.4%) patients had at least moderate mitral insufficiency on follow-up echocardiography and, of these, seven patients underwent reoperation (0.8%). The cumulative hazard showed that 8.3% of patients experienced at least one event at 5 years. NYHA class improved significantly with 874 patients in NYHA class I, 13 in NYHA class II, 6 in NYHA class III, and 0 in NYHA class IV at last follow-up (p < .001 from baseline as reference point). In a high-volume center, mitral valve surgery using a minimally invasive approach is a feasible treatment option for all-comers and is associated with excellent results that are maintained at clinical and echocardiographic follow-up.

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