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Papillary muscle head repositioning for commissural prolapse in degenerative mitral valve disease.
Interactive Cardiovascular and Thoracic Surgery 2018 July 2
OBJECTIVES: Surgical correction of commissural mitral valve prolapse can be challenging. Several surgical techniques, including commissural closure, leaflet resection with sliding plasty and chordal replacement, remain commonly in use. Conversely, papillary muscle head repositioning remains uncommonly utilized for the treatment of commissural prolapse.
METHODS: Between January 2003 and December 2015, 518 patients underwent primary mitral valve repair for severe degenerative mitral valve regurgitation at our institution. Among them, 116 patients had non-isolated commissural prolapse (14 anterolateral, 82 posteromedial and 20 bicommissural prolapse). Eighty-eight patients underwent papillary muscle head repositioning and presented the study cohort.
RESULTS: The mean patient age was 62.8 ± 12.5 years, and 32 (36%) patients were women. Postoperative echocardiography showed no residual mitral regurgitation in all but 1 (1%) patient in whom Grade 2+ regurgitation was seen. The freedom from late reintervention rates at 5 and 10 years were 96.1% [95% confidence interval (CI) 91.8-100%] and 92.7% (95% CI 86.4-99.0%), respectively. Upon reoperation, no recurrent commissural prolapse was observed. Echocardiographic follow-up demonstrated excellent valve repair durability. The freedom from Grade ≥2+ mitral regurgitation rates at 5 and 10 years were 92.6% (95% CI 86.3-98.9%) and 86.1% (95% CI 76.7-95.5%), respectively.
CONCLUSIONS: Papillary muscle head repositioning for the treatment of commissural mitral valve prolapse is a reproducible and reliable technique that provides excellent long-term results.
METHODS: Between January 2003 and December 2015, 518 patients underwent primary mitral valve repair for severe degenerative mitral valve regurgitation at our institution. Among them, 116 patients had non-isolated commissural prolapse (14 anterolateral, 82 posteromedial and 20 bicommissural prolapse). Eighty-eight patients underwent papillary muscle head repositioning and presented the study cohort.
RESULTS: The mean patient age was 62.8 ± 12.5 years, and 32 (36%) patients were women. Postoperative echocardiography showed no residual mitral regurgitation in all but 1 (1%) patient in whom Grade 2+ regurgitation was seen. The freedom from late reintervention rates at 5 and 10 years were 96.1% [95% confidence interval (CI) 91.8-100%] and 92.7% (95% CI 86.4-99.0%), respectively. Upon reoperation, no recurrent commissural prolapse was observed. Echocardiographic follow-up demonstrated excellent valve repair durability. The freedom from Grade ≥2+ mitral regurgitation rates at 5 and 10 years were 92.6% (95% CI 86.3-98.9%) and 86.1% (95% CI 76.7-95.5%), respectively.
CONCLUSIONS: Papillary muscle head repositioning for the treatment of commissural mitral valve prolapse is a reproducible and reliable technique that provides excellent long-term results.
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