Document Detail


Cross-sectional early mitral flow-velocity profiles from color Doppler in patients with mitral valve disease.
MedLine Citation:
PMID:  1516186     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Cross-sectional flow-velocity profiles from early mitral flow in 20 patients (10 with mitral regurgitation and 10 with mitral stenosis) were constructed from the velocity data from each point in sequentially delayed two-dimensional digital Doppler ultrasound maps. METHODS AND RESULTS: The data suggested that the early mitral flow studied in an apical four-chamber view was variably skewed in both patient groups. The maximum flow velocity overestimated the cross-sectional mean velocity at the same time by a factor of 1.12-1.86. The maximum time-velocity integral was 1.13-1.77-fold greater than the cross-sectional mean time-velocity integral. In patients with mitral regurgitation, the cross-sectional flow-velocity profile appeared to be most skewed at the level of the mitral leaflet tips. The level of the mitral annulus appeared to give the most homogenous flow-velocity distribution in both patient groups. CONCLUSIONS: When calculations of volume flow are based on pulsed Doppler ultrasound recordings with a single sample volume, the possibility of a skewed flow-velocity profile must be taken into account.
Authors:
S O Samstad; O Rossvoll; H G Torp; T Skjaerpe; L Hatle
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Circulation     Volume:  86     ISSN:  0009-7322     ISO Abbreviation:  Circulation     Publication Date:  1992 Sep 
Date Detail:
Created Date:  1992-10-06     Completed Date:  1992-10-06     Revised Date:  2010-03-24    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  748-55     Citation Subset:  AIM; IM    
Affiliation:
Section of Cardiology, Regional Hospital of Trondheim, Norway.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Blood Flow Velocity
Cross-Sectional Studies
Echocardiography, Doppler*
Humans
Image Processing, Computer-Assisted
Middle Aged
Mitral Valve / physiopathology,  ultrasonography*
Mitral Valve Insufficiency / physiopathology,  ultrasonography*
Mitral Valve Stenosis / physiopathology,  ultrasonography*
Regional Blood Flow
Time Factors

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


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