Document Detail

Sonographic measurement of the umbilical cord area and the diameters of its vessels during pregnancy.
MedLine Citation:
PMID:  22369394     Owner:  NLM     Status:  In-Data-Review    
The objective was to determine the cross-sectional area of the umbilical cord, its diameter and the diameter of its vessels to establish a reference curve for these parameters during pregnancy, through a prospective cross-sectional study, including 2,310 low-risk pregnancies between 12 and 40 weeks' gestation. Means and standard deviations (SDs), plus the 10th, 50th and 90th percentiles for each measurement were calculated using polynomial regression analysis. Mann-Whitney, Kruskal-Wallis and Wilcoxon tests were used for statistical analysis. These parameters increased significantly with gestational age. The area of the cord also varied significantly with parity. Their new reference curves for low risk pregnancies were calculated using polynomial regression, and an almost linear increase in values was found up to 32 weeks of pregnancy, tending to stabilise from then onwards. The regression equation of the umbilical cord area according to gestational age (GA) was: -1.417 + 0.3026*GA-0.008*GA(2) + 0.000007*GA(3) and the degree of adjustment (R(2)) was 0.89.
C Barbieri; J G Cecatti; F G Surita; E F Marussi; J V Costa
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology     Volume:  32     ISSN:  1364-6893     ISO Abbreviation:  J Obstet Gynaecol     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-02-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8309140     Medline TA:  J Obstet Gynaecol     Country:  England    
Other Details:
Languages:  eng     Pagination:  230-6     Citation Subset:  IM    
Department of Obstetrics and Gynaecology, School of Medical Sciences, Universidade Estadual de Campinas (UNICAMP) , Campinas, São Paulo , Brazil.
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