FETAL BLOOD VELOCITY WAVEFORMS IN NORMAL PREGNANCY
- 1 September 1980
- journal article
- Published by Wiley in BJOG: An International Journal of Obstetrics and Gynaecology
- Vol. 87 (9), 780-785
- https://doi.org/10.1111/j.1471-0528.1980.tb04613.x
Abstract
A combination of pulsed echo and continuous wave Doppler ultrasound was used to obtain blood flow velocity signals from the umbilical arteries of 18 normal patients from the 16th until the 40th week of pregnancy. Audio frequency analysis of these signals yielded fetal blood velocity waveforms. Analysis of these waveforms demonstrated that the placenta is an organ of low vascular resistance and that placental resistance to blood flow declines with advancing gestational age in normal pregnancy.This publication has 12 references indexed in Scilit:
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