Key result
Timely mitral valve repair for severe primary mitral regurgitation is indicated when ejection fraction falls toward 60% or end-systolic dimension increases toward 40 mm.
Why the study?
Does timely mitral valve repair compared to replacement improve lifespan in patients with severe primary mitral regurgitation?
Does timely mitral valve repair compared to replacement improve lifespan in patients with severe primary mitral regurgitation?
Timely mitral valve repair is the preferred treatment for severe primary mitral regurgitation to prevent heart failure and restore normal life expectancy.
Supports timely repair thresholds in severe primary MR; leaves open need for randomized lifespan comparisons versus replacement.
In primary mitral regurgitation there are anatomic abnormalities of the mitral valve causing backward flow, placing a hemodynamic burden on the left ventricle. If this burden is severe and prolonged, it leads to left ventricular damage, heart failure, and death. The preferred therapy is restoration of mitral competence through mitral valve repair, which is safer than mitral valve replacement. When repair is performed in a timely fashion, lifespan can be returned to that of a normal individual. Triggers for timely repair include the onset of symptoms and evidence of left ventricular dysfunction as determined by ejection fraction falling toward 60% and/or end-systolic dimension increasing toward 40 mm.
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Blasé A. Carabello (2018) conducted a review in Severe primary mitral regurgitation. Mitral valve repair vs. Mitral valve replacement was evaluated. Timely mitral valve repair for severe primary mitral regurgitation is indicated when ejection fraction falls toward 60% or end-systolic dimension increases toward 40 mm.
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