Fetal arterial redistribution indicating true umbilical cord knot

János Aranyosi, Tamás Major, Béla Fülesdi, János Zatik

Research output: Contribution to journalArticle

6 Citations (Scopus)


True umbilical cord knot often remains undiscovered prenatally due to a lack of characteristic clinical or ultrasound signs. We present a pregnancy with favorable outcome in which a non-stress test (NST) found non-reassuring fetal status. Abnormal Doppler blood flow patterns in the descending aorta and in the middle cerebral artery revealed fetal arterial redistribution with normal circulation in the umbilical artery despite a true cord knot. The benefit of fetal Doppler assessment is discussed. Increased aortic-cerebral ratio may reflect acute hypoxic compromise caused by the transitory constriction of the true umbilical cord knot with unrecognized morphologic and circulatory signs.

Original languageEnglish
Pages (from-to)225-226
Number of pages2
JournalEuropean Journal of Obstetrics and Gynecology and Reproductive Biology
Issue number2
Publication statusPublished - Feb 10 2003



  • Arterial redistribution
  • Fetal Doppler
  • True knot
  • Umbilical cord

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynaecology

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