Early and Long-Term Outcomes Following Redo Mitral Valve Surgery in Patients With Prior Minimally Invasive Mitral Valve Surgery

The frequency of minimally invasive mitral valve (MV) surgery has increased over the last decade. Hence, the number of patients requiring MV reoperations post-minimally invasive MV surgery is increasing. This study analyzed the outcomes of patients undergoing MV reoperation after previous minimally invasive MV surgery during a twenty-year period in a high volume heart valve center. A total of 187 patients were included in the analysis (34 [18.2 percent] patients repeat MV repair; 153 [81.8 percent] MV replacement). Redo MV surgery was performed through median sternotomy in 169 (90.4 percent) patients. The median intensive care unit stay was 1 day (1-5 days). The thirty-day mortality was 6.4 percent, and actuarial survival at 5 and 12 years was 61.8 percent and 38.3 percent, respectively. Endocarditis and preoperative stroke were identified as predictors of late mortality.