Abstract
This study demonstrated excessive papillary muscle displacement during peak systole but normal mitral annulus function during the cardiac cycle in patients with mitral valve prolapse and no mitral regurgitation. The excessive papillary muscle displacement may play an important role in the pathogenesis of the superior displacement of mitral leaflets in patients with mitral valve prolapse.
MeSH terms
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Adolescent
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Adult
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Cardiac Volume
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Dilatation, Pathologic / diagnostic imaging
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Dilatation, Pathologic / pathology
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Dilatation, Pathologic / physiopathology
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Echocardiography
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Female
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Humans
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Male
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Mitral Valve / diagnostic imaging
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Mitral Valve / pathology*
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Mitral Valve / physiopathology
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Mitral Valve Insufficiency
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Mitral Valve Prolapse / diagnostic imaging
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Mitral Valve Prolapse / pathology*
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Mitral Valve Prolapse / physiopathology
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Muscle Contraction
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Myocardial Contraction
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Papillary Muscles / diagnostic imaging
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Papillary Muscles / physiopathology*
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Posture
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Prospective Studies
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Stress, Mechanical
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Systole
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Ventricular Function, Left