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Nonuniformity of fetal umbilical systolic/diastolic ratios as determined with duplex Doppler sonography.

Publication ,  Journal Article
Kay, HH; Carroll, BA; Bowie, JD; Killam, AP; Hertzberg, BS
Published in: J Ultrasound Med
August 1989

Fetal umbilical arterial systolic/diastolic (S/D) ratios are said to be uniform throughout the umbilical cord. We evaluated this phenomenon by performing duplex Dopper on 73 fetuses at three sites in the umbilical cord: near the placental origin, in the free-floating midcord, and near the fetal abdominal wall insertion. Twenty-one of 73 fetuses examined (29%) demonstrated pronounced nonuniformity of the S/D ratios with a discrepancy of 1 or greater between any two S/D measurements. Studies demonstrated the highest S/D ratios at the fetal abdominal wall and lowest S/D ratios at the placental origin. These findings suggest that umbilical arterial flow velocity waveforms (FVWs) and S/D ratios are not uniform throughout the cord in all patients. The significance of this finding is uncertain; however, this variability in umbilical cord flow velocity waveforms stresses the importance of identifying the portion of the umbilical cord from which S/D ratios are obtained.

Duke Scholars

Published In

J Ultrasound Med

DOI

ISSN

0278-4297

Publication Date

August 1989

Volume

8

Issue

8

Start / End Page

417 / 420

Location

England

Related Subject Headings

  • Umbilical Cord
  • Umbilical Arteries
  • Ultrasonography
  • Ultrasonics
  • Regional Blood Flow
  • Pregnancy
  • Nuclear Medicine & Medical Imaging
  • Myocardial Contraction
  • Humans
  • Female
 

Citation

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Kay, H. H., Carroll, B. A., Bowie, J. D., Killam, A. P., & Hertzberg, B. S. (1989). Nonuniformity of fetal umbilical systolic/diastolic ratios as determined with duplex Doppler sonography. J Ultrasound Med, 8(8), 417–420. https://doi.org/10.7863/jum.1989.8.8.417
Kay, H. H., B. A. Carroll, J. D. Bowie, A. P. Killam, and B. S. Hertzberg. “Nonuniformity of fetal umbilical systolic/diastolic ratios as determined with duplex Doppler sonography.J Ultrasound Med 8, no. 8 (August 1989): 417–20. https://doi.org/10.7863/jum.1989.8.8.417.
Kay HH, Carroll BA, Bowie JD, Killam AP, Hertzberg BS. Nonuniformity of fetal umbilical systolic/diastolic ratios as determined with duplex Doppler sonography. J Ultrasound Med. 1989 Aug;8(8):417–20.
Kay, H. H., et al. “Nonuniformity of fetal umbilical systolic/diastolic ratios as determined with duplex Doppler sonography.J Ultrasound Med, vol. 8, no. 8, Aug. 1989, pp. 417–20. Pubmed, doi:10.7863/jum.1989.8.8.417.
Kay HH, Carroll BA, Bowie JD, Killam AP, Hertzberg BS. Nonuniformity of fetal umbilical systolic/diastolic ratios as determined with duplex Doppler sonography. J Ultrasound Med. 1989 Aug;8(8):417–420.

Published In

J Ultrasound Med

DOI

ISSN

0278-4297

Publication Date

August 1989

Volume

8

Issue

8

Start / End Page

417 / 420

Location

England

Related Subject Headings

  • Umbilical Cord
  • Umbilical Arteries
  • Ultrasonography
  • Ultrasonics
  • Regional Blood Flow
  • Pregnancy
  • Nuclear Medicine & Medical Imaging
  • Myocardial Contraction
  • Humans
  • Female