Document Detail

Umbilical artery flow velocity waveforms and the placental vascular bed.
MedLine Citation:
PMID:  2960239     Owner:  NLM     Status:  MEDLINE    
Umbilical artery Doppler studies were performed close to delivery in 17 women (seven with healthy pregnancies and 10 complicated by intrauterine growth retardation), and results were analyzed by calculating the pulsatility index. In each case the placenta was examined histologically, and the small arteries and arterioles were counted in the tertiary stem villi. A highly significant negative linear relationship was found between pulsatility index and mean small arterial vessel count per field (r = 0.71, p less than 0.01). This suggests that when the pulsatility index is raised (indicating increased resistance), one possible explanation may be obliteration of small placental arteries.
L M McCowan; B M Mullen; K Ritchie
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  157     ISSN:  0002-9378     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  1987 Oct 
Date Detail:
Created Date:  1987-11-25     Completed Date:  1987-11-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  900-2     Citation Subset:  AIM; IM    
University of Toronto Perinatal Complex, Ontario, Canada.
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MeSH Terms
Arteries / anatomy & histology
Arterioles / anatomy & histology
Blood Flow Velocity
Fetal Growth Retardation / physiopathology
Placenta / blood supply*
Pulsatile Flow
Reference Values
Umbilical Arteries / physiology*

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

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