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Mitral valve replacement after percutaneous transvenous mitral commissurotomy
Cardiovascular Surgery (London, England)
|August 1, 1996
Summary
Percutaneous transvenous mitral commissurotomy can lead to massive mitral regurgitation. Tears in the posterior leaflet, not commissure splitting, are the primary cause, necessitating valve replacement in some patients.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiac Surgery
Background:
- Percutaneous transvenous mitral commissurotomy (PTMC) is a primary non-pharmacological treatment for mitral stenosis.
- Complications such as massive mitral regurgitation (MMR) can necessitate further intervention, including mitral valve replacement (MVR).
Purpose of the Study:
- To elucidate the mechanism of massive mitral regurgitation occurring during PTMC.
- To identify factors contributing to MMR post-PTMC.
Main Methods:
- Case review of five patients who underwent MVR after PTMC.
- Analysis of existing Japanese literature on MVR following PTMC for MMR.
Main Results:
- In the reviewed cases, MMR was caused by large tears in the posterior mitral leaflet without commissural splitting.
- Literature review indicated 16 patients underwent MVR for MMR post-PTMC, with 14 showing leaflet tears and no posterior commissure splitting.
Conclusions:
- Relative leaflet fragility compared to rigid commissural fusion, particularly the posterior commissure, is a key factor in MMR during PTMC.
- Understanding this mechanism can help refine PTMC techniques and patient selection to mitigate risks.