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[Fetal blood circulation in multiple pregnancy]
1Aacheni RWTH, Orvostudományi Kar, Szülészeti és Nögyógyászati Klinika.
Orvosi Hetilap
|February 5, 1995
Summary
Twin and triplet pregnancies with placental insufficiency show a brain sparing effect. Fetal middle cerebral artery resistance decreases, indicating blood flow redistribution to protect the brain.
Area of Science:
- Perinatology
- Fetal Medicine
- Doppler Ultrasound
Context:
- Assessing fetal well-being in multiple gestations is crucial.
- Placental insufficiency is a significant cause of fetal growth restriction.
- Doppler ultrasound evaluates blood flow patterns in maternal and fetal circulation.
Purpose:
- To investigate blood flow velocity waveforms in maternal uterine and fetal arteries in twin and triplet pregnancies.
- To identify hemodynamic changes associated with placental insufficiency and fetal growth restriction in multiple births.
- To explore the 'brain sparing effect' in growth-restricted fetuses within twin and triplet gestations.
Summary:
- Doppler ultrasound was used to study 31 twin and 3 triplet gestations in the last trimester.
- Growth-restricted neonates due to placental insufficiency showed significantly higher umbilical artery resistance indices and lower middle cerebral artery resistance indices compared to controls.
- These findings suggest a brain sparing effect in growth-restricted fetuses from multiple gestations experiencing placental insufficiency.
Impact:
- Provides evidence for the brain sparing phenomenon in growth-restricted fetuses within twin and triplet pregnancies.
- Highlights the utility of Doppler ultrasound in detecting fetal compromise in high-risk multiple gestations.
- Contributes to understanding fetal adaptation strategies to placental insufficiency, similar to singletons.