Linked Life Data

3272763

Source:http://linkedlifedata.com/resource/pubmed/id/3272763

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1990-4-20
pubmed:abstractText
Determination of aortic valve area by the continuity equation is feasible and accurate but requires planimetry. Because the ratio of maximum velocities in the left ventricular outflow tract (LVOT) to aortic jet is quite similar to the ratio of velocity-time integrals at these sites, the continuity equation can be simplified by substituting maximum velocities for velocity-time integrals. Agreement with invasively determined aortic valve areas is similar with the conventional and simplified forms of the continuity equation. However, substitution of the average or sex-specific LVOT diameter for measured LVOT diameter in individual patients leads to less accurate aortic valve area determination. We conclude that simplification of the continuity equation, with measured LVOT diameter and maximum velocity and aortic jet maximum velocity, allows noninvasive calculation of the aortic valve area in a way that is simple and accurate.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0894-7317
pubmed:author
pubmed:issnType
Print
pubmed:volume
1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
155-7
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:articleTitle
Simplification of the Doppler continuity equation for calculating stenotic aortic valve area.
pubmed:affiliation
Division of Cardiology, Department of Medicine, University of Washington, Seattle 98195.
pubmed:publicationType
Journal Article