Document Detail

Doppler ultrasonography of the umbilical cord in normal pregnancy.
MedLine Citation:
PMID:  8420018     Owner:  NLM     Status:  MEDLINE    
Using continuous wave Doppler ultrasonography to measure umbilical artery flow velocity waveforms (FVWs) is a safe, noninvasive means of quantifying placental resistance to blood flow. Detection of abnormally elevated resistance to umbilical perfusion may identify pregnancies complicated by uteroplacental insufficiency. Use of this technique to identify high-risk pregnancies requires ready access to standard tables of normal FVW values obtained from well-defined populations under usual clinical conditions. We report measurements of the systolic-diastolic (S-D) ratio of the umbilical artery obtained between 16 and 43 weeks in 122 normal pregnancies. A gestational-age-adjusted table of normal values is presented.
J P Bruner; S G Gabbe; D W Levy; P H Arger
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Southern medical journal     Volume:  86     ISSN:  0038-4348     ISO Abbreviation:  South. Med. J.     Publication Date:  1993 Jan 
Date Detail:
Created Date:  1993-02-11     Completed Date:  1993-02-11     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0404522     Medline TA:  South Med J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  52-5     Citation Subset:  AIM; IM    
Department of Obstetrics and Gynecology, Hospital of the University of Pennsylvania, Philadelphia.
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MeSH Terms
Blood Flow Velocity / physiology
Diastole / physiology
Gestational Age
Pregnancy / physiology*
Reference Values
Systole / physiology
Ultrasonography, Prenatal*
Umbilical Arteries / physiology,  ultrasonography*

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