| Systolic anterior motion in the absence of asymmetric septal hypertrophy. A buckling phenomenon of the chordae tendineae. | |
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MedLine Citation:
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PMID: 7192186 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Systolic anterior motion (SAM) of the mitral valve in the absence of asymmetric septal hypertrophy or concentric left ventricular hypertrophy has been reported in several conditions. In this report we describe the clinical and echocardiographic findings in 15 patients who demonstrated SAM without associated organic heart disease (group 1, 10 patients) or in association with mitral valve prolapse (group 2, five patients). Cross-sectional echocardiography revealed the etiology of SAM in both groups to be early systolic anterior angular motion ("buckling") of mitral chordal structures, rather than movement of the body of the anterior mitral leaflet into the left ventricular outflow tract. In contrast to normal subjects and group 1, group 2 patients had auscultatory evidence of mitral prolapse, a slightly greater mean left ventricular ejection fraction (p < 0.05) (normals, 69 +/- 5.2%, group 1, 72 +/- 3.8%, group 2, 75+/- 5.6%), and a greater mean diastolic mitral valve (D-E) excursion (p < 0.05) (normals, 1.8 +/- 0.2 cm, group 1, 2.2 +/- 0.3 cm, and group 2, 2.6 +/- 0.4 cm). This spectrum of mitral excursion and left ventricular ejection fraction supports the concept that the mitral valve prolapse syndrome may have as its basis a mitral valve abnormality and/or a hyperdynamic state that predispose to both chordal buckling and mitral leaflet prolapse. |
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Authors:
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J M Gardin; J V Talano; L Stephanides; J Fizzano; M Lesch |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Circulation Volume: 63 ISSN: 0009-7322 ISO Abbreviation: Circulation Publication Date: 1981 Jan |
Date Detail:
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Created Date: 1981-02-26 Completed Date: 1981-02-26 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0147763 Medline TA: Circulation Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 181-8 Citation Subset: AIM; IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Cardiomyopathy, Hypertrophic / diagnosis* Chordae Tendineae / physiopathology* Echocardiography Female Heart Auscultation Humans Male Middle Aged Mitral Valve / physiopathology Myocardial Contraction* Systole* |
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