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Umbilical vein blood flow in rhesus-isoimmunization
British Journal of Obstetrics and Gynaecology
|July 1, 1983
Summary
Doppler ultrasound can noninvasively assess fetal well-being in rhesus-isoimmunization pregnancies. Elevated umbilical vein blood flow indicates severe fetal anemia and improves after transfusion, correlating with hemoglobin levels.
Area of Science:
- Obstetrics and Gynecology
- Fetal Medicine
- Medical Imaging
Background:
- Rhesus-isoimmunization poses significant risks to fetal health.
- Accurate fetal assessment is crucial for managing these high-risk pregnancies.
Purpose of the Study:
- To evaluate the utility of Doppler ultrasound for noninvasive assessment of fetal condition in rhesus-isoimmunization.
- To correlate umbilical vein blood flow with fetal anemia severity.
Main Methods:
- Utilized a noninvasive technique combining real-time and pulsed Doppler ultrasound.
- Measured fetal umbilical vein blood flow in 18 pregnancies with rhesus-isoimmunization.
Main Results:
- Fetal umbilical vein blood flow was elevated in severely affected fetuses.
- Blood flow increased immediately following intrauterine blood transfusion.
- A significant inverse correlation was observed between umbilical vein blood flow and cord hemoglobin concentration at birth (r = -0.68).
Conclusions:
- Doppler ultrasound provides a valuable noninvasive method for assessing fetal status in rhesus-isoimmunization.
- Umbilical vein blood flow measurements can help gauge the severity of fetal anemia and response to treatment.