| Echocardiographic determination of aortic and pulmonary valve areas in subjects with normal hearts. | |
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MedLine Citation:
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PMID: 1892085 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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H P Gutgesell; M French |
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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: 68 ISSN: 0002-9149 ISO Abbreviation: Am. J. Cardiol. Publication Date: 1991 Sep |
Date Detail:
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Created Date: 1991-10-16 Completed Date: 1991-10-16 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: 773-6 Citation Subset: AIM; IM |
Affiliation:
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Department of Pediatrics, University of Virginia Medical School, Charlottesville. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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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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