| Color-coded Doppler imaging of the vena contracta as a basis for quantification of pure mitral regurgitation. | |
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MedLine Citation:
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PMID: 8296758 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The narrowest central flow region of a jet is defined as the vena contracta. This term is applied also to the contracted zone of the Doppler color flow image of a jet at its passage through an incompetent mitral valve. The clinical applicability of measuring the size of the vena contracta by transthoracic color-coded Doppler echocardiography for estimating the severity of mitral regurgitation (MR) was evaluated. In 78 of 82 patients with angiographically proved MR, a coherent flow image across the valve was visualized. The maximal diameter in the apical long-axis view was considered as a representative value for the size of the vena contracta. In comparison with the maximal left atrial velocity pixel area, this parameter revealed higher correlations to the angiographic degree of MR and to the regurgitant volume (r = 0.94 vs 0.72, and 0.83 vs 0.71, respectively). The highest positive and negative predictive accuracies for differentiating mild-to-moderate from severe MR were determined for a diameter of 6.5 mm (88 and 96%, respectively). Because the vena contracta is directly related to the severity of MR, it is concluded that it is helpful to use this parameter instead of the maximal velocity pixel area for semiquantitative grading. |
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Authors:
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W Fehske; H Omran; M Manz; J Köhler; A Hagendorff; B Lüderitz |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The American journal of cardiology Volume: 73 ISSN: 0002-9149 ISO Abbreviation: Am. J. Cardiol. Publication Date: 1994 Feb |
Date Detail:
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Created Date: 1994-03-03 Completed Date: 1994-03-03 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0207277 Medline TA: Am J Cardiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 268-74 Citation Subset: AIM; IM |
Affiliation:
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Department of Cardiology, University of Bonn, Germany. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Blood Flow Velocity Confounding Factors (Epidemiology) Echocardiography, Doppler* Female Humans Male Middle Aged Mitral Valve Insufficiency / physiopathology, ultrasonography* Observer Variation Severity of Illness Index |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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