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Pulsatile umbilical venous flow and its clinical significance
Y Nakai1, Y Miyazaki, Y Matsuoka
1Department of Obstetrics and Gynaecology, Amagasaki Medical COOP Hospital, Hyogo, Japan.
British Journal of Obstetrics and Gynaecology
|December 1, 1992
Summary
Pulsatile waveforms in the umbilical vein are rare but can indicate serious fetal conditions like heart defects or growth problems. This finding helps in early detection of fetal distress.
Area of Science:
- Perinatology
- Fetal Cardiology
- Medical Ultrasound
Background:
- Umbilical vein pulsatile waveforms are uncommon.
- Their clinical significance in high-risk pregnancies requires further investigation.
Purpose of the Study:
- To determine the prevalence of pulsatile waveforms in the umbilical vein.
- To assess the significance of these waveforms in relation to pregnancy outcomes.
Main Methods:
- Study conducted at a tertiary referral clinic for high-risk pregnancies.
- Analysis of 209 fetuses (24-41 weeks gestation).
- Evaluation of umbilical venous waveform pulsatility and pregnancy outcomes.
Main Results:
- Pulsatile waveforms were detected in 9 out of 209 fetuses.
- Seven fetuses with pulsatile flow had severe growth retardation or congenital heart anomalies.
- Abnormalities in inferior vena cava waveforms were noted in these seven cases.
Conclusions:
- Umbilical venous pulsatile flow is a valuable indicator.
- It suggests the presence of asphyxial cardiomyopathy or congenital heart lesions.
- This examination aids in identifying fetuses requiring closer monitoring.