Journal article
Dynamic left ventricular outflow tract obstruction and systolic anterior motion of the mitral valve in the absence of asymmetric septal hypertrophy
The American journal of medicine, Vol.65(4), pp.703-708
10/1978
DOI: 10.1016/0002-9343(78)90859-8
PMID: 568385
Abstract
Systolic anterior motion of the anterior mitral valve leaflet and asymmetric septal hypertrophy are the principal components of the dynamic subaortic stenosis in hypertrophic obstructive cardiomyopathy. Mitral valve systolic anterior motion without septal hypertrophy or left ventricular outflow tract obstruction has been described, but asymmetric septal hypertrophy is supposedly a consistent feature of dynamic subaortic stenosis. We describe two patients with syncope, chest pain and the typical systolic murmur of hypertrophic subaortic stenosis whose echocardiograms showed mitral valve systolic anterior motion but not asymmetric septal hypertrophy. Normal septal thickness on echo was confirmed by intravenous indocyanine green to identify the right septal endocardium. At catheterization, left ventricular outflow tract gradients were provoked, and neither patient had interventricular septal hypertrophy on biventricular cineangiography. These findings in two cases suggest that mitral valve systolic anterior motion can be the only definable anatomic abnormality associated with symptomatic dynamic left ventricular outflow tract obstruction and that asymmetric septal hypertrophy is not a necessary component of this condition.
Details
- Title: Subtitle
- Dynamic left ventricular outflow tract obstruction and systolic anterior motion of the mitral valve in the absence of asymmetric septal hypertrophy
- Creators
- Michael H. Crawford - The University of Texas at San AntonioBertron M. GrovesLawrence D. Horwitz - The University of Texas at San Antonio
- Resource Type
- Journal article
- Publication Details
- The American journal of medicine, Vol.65(4), pp.703-708
- Publisher
- Elsevier Inc
- DOI
- 10.1016/0002-9343(78)90859-8
- PMID
- 568385
- ISSN
- 0002-9343
- eISSN
- 1555-7162
- Language
- English
- Date published
- 10/1978
- Academic Unit
- Cardiovascular Medicine; Internal Medicine
- Record Identifier
- 9984656537802771
Metrics
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