Document Detail

Determination of mitral valve area in patients with mitral stenosis by the flow-convergence-region method during changing hemodynamic conditions.
MedLine Citation:
PMID:  8800036     Owner:  NLM     Status:  MEDLINE    
Twenty-eight patients with mitral stenosis underwent Doppler echocardiography at rest and during exercise to determine the accuracy of mitral valve area determination by the flow-convergence-region method during exercise-induced changing hemodynamic conditions. The mitral valve area calculated by using the flow-convergence-region method correlated strongly with that measured by the Gorlin formula both at rest (r = 0.85) and during exercise (r = 0.92) for all 28 patients studied. Although mitral valve area obtained by the flow-convergence-region method did not change (p = 0.1) in 16 patients with echocardiographic mitral scores > or = 12, it increased significantly during exercise (p = 0.0001) in 12 patients with echocardiographic mitral scores < 12. This study suggests that in mitral stenosis, the mitral valve area can be accurately estimated by the flow-convergence-region method both at rest and during changing hemodynamic conditions induced by supine bicycle exercise.
Y B Deng; M Matsumoto; J Munehira
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American heart journal     Volume:  132     ISSN:  0002-8703     ISO Abbreviation:  Am. Heart J.     Publication Date:  1996 Sep 
Date Detail:
Created Date:  1996-10-18     Completed Date:  1996-10-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  633-41     Citation Subset:  AIM; IM; S    
Department of Geriatric Medicine, Kanazawa Medical University, Ishikawa-ken, Japan.
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MeSH Terms
Blood Flow Velocity
Blood Pressure
Cardiac Output
Echocardiography, Doppler, Color
Exercise Test
Heart Catheterization
Heart Rate
Middle Aged
Mitral Valve / pathology*,  physiopathology,  ultrasonography
Mitral Valve Stenosis / pathology*,  physiopathology,  ultrasonography
Physical Exertion
Pulsatile Flow
Supine Position
Ventricular Function, Left
Ventricular Pressure

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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