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Doppler ultrasound study of umbilical artery waveforms helps to identify the compromised fetus in 'high‐risk' pregnancies and, therefore, deserves assessment as a screening test in 'low‐risk' pregnancies.

Doppler ultrasound uses sound waves to detect the movement of blood in vessels. It is used in pregnancy to study blood circulation in the baby, uterus and placenta. Using it in high‐risk pregnancies, where there is concern about the baby's condition, shows benefits.

Doppler ultrasound examination can be performed as a part of a more detailed ultrasound assessment that includes fetal biometry and anatomical survey, or as a separate ultrasound examination.