RIGHT AXILLARY MINI–THORACOTOMY FOR MINIMALLY INVASIVE MITRAL SURGERY: A 5–YEAR SINGLE–CENTER EXPERIENCE

Abstract

Abstract Objectives To report early– and long–term outcomes of patients undergoing minimally invasive mitral surgery (MIMS) through right axillary mini–thoracotomy (RAMT) over a 5–year period. Methods From July 2016 to December 2021, a total of 172 patients underwent MIMS through RAMT at “Vito Fazzi” Hospital. Results Mitral valve diseases were degenerative (62.8%), rheumatic (13.9%), functional (13.4%), Barlow (5.2%), and endocarditis (4.7%) mitral disease. Mitral valve repair was performed in 142 patients (82.5%) and 30 (17.5%) had mitral replacement. Repair techniques included neochordae implantation (53.5%), isolated annuloplasty (28.9%), leaflet resection (11.3%), sliding plasty (4.9%) and Alfieri procedure (0.7%). Furthermore, in 29 patients (16,8%) concomitant procedures were associated. All cardiac procedures were performed under direct vision and without using thoracoscopes. Mean length of skin incision under the armpit (fig 1) was 5.7 ± 1.3 cm. Of note, conversion to median sternotomy occurred only in 2 (1.2%) cases. Stroke incidence was 0.9% and in–hospital mortality 0.5%. Overall survival and freedom from reoperation at 5 years were 91.5% and 99.1%, respectively (fig 2). Conclusions RAMT access for MIMS is a safe and reproducible approach associated with low mortality and morbidity, the possibility to perform complex mitral surgery under direct vision, high rate of mitral valve repair, and excellent late results. Importantly, limited skin incision under the armpit provided excellent aesthetic results.