Patient Dataset_Retrospective_Study_2020-2024.xlsx.xlsx

This multicenter retrospective study included 55 adults with severe rheumatic mitral Insufficiency (RMI) who underwent elective mechanical mitral valve replacement between 2020 and 2024 in Morocco. Patients were divided into two groups: 27 received minimally invasive surgery (MICS) via minithoracotomy, and 28 underwent conventional sternotomy (CMS). The primary endpoint was 30-day all-cause mortality. Secondary outcomes included operative times, postoperative complications, ICU/hospital stay duration, 12-month functional recovery, valve performance, and event-free survival based on Kaplan–Meier analysis.