Variation and correlation in human fetal umbilical Doppler velocities with fetal breathing: evidence of the cardiac-placental connection.

Abstract

Doppler velocity waveforms in the human fetal umbilical vein and artery were analyzed during episodes of fetal breathing. Heart rate, systolic and diastolic velocities were measured from the umbilical artery waveform. Diastolic velocity varied the most with a mean (+/- SD) coefficient of variation of 16.0% +/- 5.0%. The coefficient of variation of systolic… (More)

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@article{Indik1990VariationAC, title={Variation and correlation in human fetal umbilical Doppler velocities with fetal breathing: evidence of the cardiac-placental connection.}, author={Julia Heisler Indik and Karin Reed}, journal={American journal of obstetrics and gynecology}, year={1990}, volume={163 6 Pt 1}, pages={1792-6} }