Related Experiment Videos
Doppler velocimetry in twin pregnancy
1Department of Obstetrics and Gynecology, Aker University Hospital, Oslo, Norway.
Summary
Doppler ultrasound of umbilical artery blood flow in twins identified high resistance as a predictor of fetal distress and low birth weight, indicating placental insufficiency.
Area of Science:
- Perinatology
- Fetal Medicine
- Obstetrics
Background:
- Twin pregnancies face increased risks of fetal complications.
- Placental insufficiency is a significant concern in high-risk pregnancies.
- Monitoring fetal well-being is crucial in the third trimester.
Purpose of the Study:
- To investigate the relationship between umbilical artery flow velocity waveform resistance and fetal well-being in twin pregnancies.
- To assess the predictive value of umbilical artery Doppler measurements for fetal distress and low birth weight.
Main Methods:
- Flow velocity waveform profiles in the umbilical artery were measured in 50 pairs of twins.
- Measurements were conducted during the final week of gestation.
- Resistance indices were calculated from the Doppler waveforms.
Main Results:
- A significant association was observed between high resistance indices and late fetal heart rate decelerations.
- Increased resistance correlated with a higher frequency of decelerations.
- The link between high umbilical artery resistance and low birth weight was confirmed.
Conclusions:
- Umbilical artery Doppler velocimetry is a valuable tool for identifying fetuses experiencing placental insufficiency.
- High resistance in umbilical artery circulation is indicative of potential fetal compromise in twins.
- These findings support the use of Doppler ultrasound in managing high-risk twin pregnancies.