Document Detail


Echocardiographic determination of aortic and pulmonary valve areas in subjects with normal hearts.
MedLine Citation:
PMID:  1892085     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Two-dimensional and Doppler echocardiography were performed in 70 subjects (aged 1 day to 16 years, body surface area from 0.08 to 2.1 m2) to determine aortic and pulmonary valve areas in normal children and adolescents. Valve areas were determined by the continuity equation using echo-determined ventricular outflow tract diameters and Doppler-determined flow velocities from the outflow tracts and corresponding great arteries. Left ventricular outflow tract diameter ranged from 0.3 to 2.2 cm and right ventricular outflow tract diameter from 0.4 to 2.8 cm. Outflow tract diameters were linearly related to the square root of body surface area. Flow velocity increased from a mean of 0.75 m/s in the left ventricular outflow tract to 1.12 m/s in the aorta and from 0.56 m/s in the right ventricular outflow tract to 0.89 m/s in the pulmonary artery. Flow velocities were unrelated to body size. Valve areas were linearly related to body surface area (r = 0.88 and 0.80 for the aortic and pulmonary valves, respectively). Mean aortic and pulmonary valve area indexes were 1.33 cm2/m2 and 1.70 cm2/m2, respectively. The data provide normal values for echocardiographically determined valve areas and validate the practice of indexing valve area for body surface area.
Authors:
H P Gutgesell; M French
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The American journal of cardiology     Volume:  68     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1991 Sep 
Date Detail:
Created Date:  1991-10-16     Completed Date:  1991-10-16     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  773-6     Citation Subset:  AIM; IM    
Affiliation:
Department of Pediatrics, University of Virginia Medical School, Charlottesville.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Aortic Valve / physiology,  ultrasonography*
Blood Flow Velocity / physiology
Body Surface Area
Child
Child, Preschool
Echocardiography, Doppler*
Humans
Infant
Infant, Newborn
Pulmonary Valve / physiology,  ultrasonography*
Reference Values

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


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