| Determination of mitral valve area in patients with mitral stenosis by the flow-convergence-region method during changing hemodynamic conditions. | |
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MedLine Citation:
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PMID: 8800036 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Y B Deng; M Matsumoto; J Munehira |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: American heart journal Volume: 132 ISSN: 0002-8703 ISO Abbreviation: Am. Heart J. Publication Date: 1996 Sep |
Date Detail:
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Created Date: 1996-10-18 Completed Date: 1996-10-18 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0370465 Medline TA: Am Heart J Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 633-41 Citation Subset: AIM; IM; S |
Affiliation:
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Department of Geriatric Medicine, Kanazawa Medical University, Ishikawa-ken, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood Flow Velocity Blood Pressure Cardiac Output Echocardiography, Doppler, Color Exercise Test Heart Catheterization Heart Rate Hemodynamics Hemorheology Humans Middle Aged Mitral Valve / pathology*, physiopathology, ultrasonography Mitral Valve Stenosis / pathology*, physiopathology, ultrasonography Physical Exertion Pulsatile Flow Rest Supine Position Ventricular Function, Left Ventricular Pressure |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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