Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1996-12-26
pubmed:abstractText
In fetuses with single umbilical artery (SUA) the entire blood flow to the placenta is transported through only one umbilical artery, resulting in a compensatory increase of the arterial diameter. In order to establish whether umbilical vessel size could be used as an additional ultrasonographic criterion for prenatal diagnosis of SUA, we measured umbilical vein and umbilical artery diameters in 55 fetuses with SUA and in 55 with a normal three-vessel cord matched for gestational age. In all but one fetus with SUA, the diameter of the umbilical artery was greater than 50% of that of the umbilical vein, resulting in an umbilical vein to umbilical artery ratio of < or = 2. In contrast, none of the fetuses with a three-vessel cord had a ratio of < or = 2. Increasing diameter of the umbilical artery with no modification of the diameter of the vein is a characteristic prenatal ultrasonographic feature of SUA, making this observation a useful technique for the detection of this vascular anomaly in utero.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0960-7692
pubmed:author
pubmed:issnType
Print
pubmed:volume
8
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
23-6
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Umbilical vein to artery ratio in fetuses with single umbilical artery.
pubmed:affiliation
Centre for Fetal Care, Royal Postgraduate Medical School, Queen Charlotte's and Chelsea Hospital, London, UK.
pubmed:publicationType
Journal Article