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Related Experiment Videos

Single umbilical artery--right or left? does it matter?

S Blazer1, P Sujov, Z Escholi

  • 1Department of Neonatology, Rambam Medical Center, Haifa, Israel.

Prenatal Diagnosis
|January 1, 1997
PubMed
Summary
This summary is machine-generated.

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Single umbilical artery (UA) diagnosis is common, but its side and relation to birth defects are unclear. This study found no link between the UA side and malformations, suggesting random vessel selection.

Area of Science:

  • Medical Imaging
  • Prenatal Diagnosis
  • Fetal Medicine

Background:

  • Single umbilical artery (UA) is a common prenatal finding.
  • The exact side of a single UA and its association with congenital anomalies are not well understood.

Purpose of the Study:

  • To investigate the side of single umbilical artery (UA) occurrence.
  • To determine the correlation between single UA side and congenital malformations.
  • To assess the reliability of early ultrasonographic detection of single UA side.

Main Methods:

  • Prospective study of 46 pregnancies with prenatally diagnosed single UA.
  • Identification of UA side using transvaginal sonography between 14-16 weeks' gestation.
  • Analysis of associated congenital anomalies and their correlation with UA side.

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Main Results:

  • A single UA was identified in 46 fetuses; 54.3% were right-sided, 45.7% left-sided.
  • 13% of fetuses had associated anomalies, predominantly urinary system malformations.
  • No correlation was found between the side of the single UA and the presence or severity of malformations.

Conclusions:

  • Ultrasonography reliably determines single UA side from the second trimester.
  • The side of a single umbilical artery appears to be randomly determined.
  • The presence of associated anomalies is not linked to the specific side of the single UA.