FETAL BLOOD VELOCITY WAVEFORMS IN UNCOMPLICATED LABOUR

  1. B. Stuart1,
  2. J. Drumm1,
  3. D. E. Fitzgerald2,
  4. N. M. Duignan3

Article first published online: 23 AUG 2005

DOI: 10.1111/j.1471-0528.1981.tb02220.x

Issue

BJOG: An International Journal of Obstetrics & Gynaecology

BJOG: An International Journal of Obstetrics & Gynaecology

Volume 88, Issue 9, pages 865–869, September 1981

Additional Information

How to Cite

Stuart, B., Drumm, J., Fitzgerald, D. E. and Duignan, N. M. (1981), FETAL BLOOD VELOCITY WAVEFORMS IN UNCOMPLICATED LABOUR. BJOG: An International Journal of Obstetrics & Gynaecology, 88: 865–869. doi: 10.1111/j.1471-0528.1981.tb02220.x

Author Information

  1. 1

    Coombe Lying-in Hospital, Dublin 8, Ireland

  2. 2

    Angiology Research Group, Irish Foundation for Human Development Garden Hill, Dublin 8, Ireland

  3. 3

    Coombe Lying-in Hospital, Dublin 8, Ireland

Publication History

  1. Issue published online: 23 AUG 2005
  2. Article first published online: 23 AUG 2005
  3. Received January 6,1981/Accepted February 16,1981

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Summary

A combination of pulsed echo and continuous wave Doppler ultrasound was used to obtain blood flow velocity signals from the umbilical arteries of 10 patients during uncomplicated spontaneous labour. Audio frequency analysis of these signals yielded fetal blood velocity waveforms. Analysis of these waveforms demonstrated that placental vascular resistance to feto-placental blood flow is not altered by uterine contractions, artificial rupture of the membranes, the infusion of oxytocin nor the administration of analgesia during uncomplicated labour.

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