Document Detail

Determination of coronary flow measurements by transesophageal echocardiography: dependence of flow velocity reserve on the location of stenosis.
MedLine Citation:
PMID:  9006289     Owner:  NLM     Status:  MEDLINE    
Doppler velocimetry with the use of transesophageal echocardiography can record flow in the proximal left anterior descending artery (LAD). To assess whether this limited sampling ability influences the recording of velocity and the calculation of coronary flow reserve (CFR), 32 patients with LAD stenosis (4 ostial stenoses, 18 proximal stenoses, 10 mid-LAD stenoses) and 33 patients with arteriographically normal LADs were studied. Basal flow and dipyridamole-induced hyperemic flow rates were recorded. The mean basal flow velocity in ostial stenoses was greater than in other groups, and the mean basal flow velocity in proximal stenoses was less than that in mid-LAD stenoses and in the normal group. Maximal hyperemic velocity did not differ between the groups. CFR in all stenoses groups was less than that in the normal group. Ostial CFR was less than in all other groups, and proximal CFR was less than that in either the mid-LAD or the normal LAD groups. With this technique, coronary flow velocimetry and estimation of CFR is affected by the location of stenosis.
S J Hutchison; S J Soldo; S Gadallah; D T Kawanishi; P A Chandraratna
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American heart journal     Volume:  133     ISSN:  0002-8703     ISO Abbreviation:  Am. Heart J.     Publication Date:  1997 Jan 
Date Detail:
Created Date:  1997-02-11     Completed Date:  1997-02-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  44-52     Citation Subset:  AIM; IM    
Department of Medicine, Los Angeles, County/University of Southern California Medical Center, USA.
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MeSH Terms
Aged, 80 and over
Blood Flow Velocity
Coronary Circulation*
Coronary Disease / pathology*,  physiopathology*,  ultrasonography
Echocardiography, Doppler
Echocardiography, Transesophageal* / methods
Middle Aged
Observer Variation
Reproducibility of Results

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