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This study examines the durability of mitral valve (MV) repair for mitral regurgitation using chordal replacement with expanded polytetrafluoroethylene sutures to correct leaflet prolapse.

Isolated chordal replacement was used to correct prolapse in 186 (24.9%) patients and combined with leaflet resection in 560 (75.1%). Patients were followed prospectively with periodical clinical and echocardiographic assessments for a median follow-up of 11áyears (range, 7-16áyears).

Patients' median age was 58áyears (range, 48-67áyears) and 516 (69.2%) were men. Bileaflet prolapse was present in 63% of patients and advanced myxomatous degeneration was present in 32%. The number of neochords per repaired valve increased over time and was not associated with MV reoperation or recurrent mitral regurgitation. The cumulative incidence of MV reoperation with death as a competing risk was …