Umbilical Artery Doppler
Ultrasound assessment of blood flow in the umbilical arteries to evaluate placental function and fetal well-being.
Full Definition
Umbilical artery Doppler is a specialized ultrasound technique that measures blood flow velocity and resistance in the umbilical arteries. The assessment provides crucial information about placental vascular resistance and fetal oxygenation status. Key measurements include the systolic/diastolic ratio, resistance index, and pulsatility index. Abnormal findings such as absent or reversed end-diastolic flow indicate severe placental insufficiency and may necessitate immediate delivery. This monitoring tool is particularly valuable in cases of suspected intrauterine growth restriction, preeclampsia, or other high-risk pregnancies.
Usage
Usage note: Capitalize 'Doppler' when referring to the technique or equipment.
In Context
- "Umbilical artery Doppler showed absent end-diastolic flow, indicating severe placental compromise." — Fetal surveillance report
- "Normal umbilical artery Doppler waveforms were documented with appropriate diastolic flow." — Prenatal monitoring documentation