Document Detail

Detection of intracardiac shunt flow in atrial septal defect using a real-time two-dimensional color-coded Doppler flow imaging system and comparison with contrast two-dimensional echocardiography.
MedLine Citation:
PMID:  4025176     Owner:  NLM     Status:  MEDLINE    
To evaluate the noninvasive detection of shunt flow using a newly developed real-time 2-dimensional color-coded Doppler flow imaging system (D-2DE), 20 patients were examined, including 10 with secundum atrial septal defect (ASD) and 10 control subjects. These results were compared with contrast 2-dimensional echocardiography (C-2DE). Doppler 2DE displayed the blood flow toward the transducer as red and the blood flow away from the transducer as blue in 8 shades, each shade adding green according to the degree of variance in Doppler frequency. In the patients with ASD, D-2DE clearly visualized left-to-right shunt flow in 7 of 10 patients. In 5 of these 7 patients, C-2DE showed a negative contrast effect in the same area of the right atrium. Thus, D-2DE increased the sensitivity over C-2DE for detecting left-to-right shunt flow (from 50% to 70%). However, the specificity was slightly less in D-2DE (90%) than C-2DE (100%). Doppler 2DE could not visualize right-to-left shunt flow in all patients with ASD, though C-2DE showed a positive contrast effect in the left-sided heart in 9 of 10 patients with ASD. Thus, D-2DE is clinically useful for detecting left-to-right shunt flow in patients with ASD.
Y Suzuki; H Kambara; K Kadota; S Tamaki; A Yamazato; R Nohara; G Osakada; C Kawai
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The American journal of cardiology     Volume:  56     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1985 Aug 
Date Detail:
Created Date:  1985-08-27     Completed Date:  1985-08-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  347-50     Citation Subset:  AIM; IM    
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MeSH Terms
Blood Flow Velocity
Echocardiography / instrumentation,  methods*
Heart Septal Defects, Atrial / diagnosis*
Middle Aged
Videotape Recording

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

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