Intact placental function is a prerequisite for adequate nutritional and respiratory supply of the fetus. The major factor underlying placental dysfunction is a disturbance of uteroplacental and fetoplacental blood flow, which until recently could be measured only in animal or clinical experiments. The introduction of Doppler ultrasound technology into obstetrical diagnosis first made it possible to carry out noninvasive measurement of the blood flow in uteroplacental vessels, umbilical vessels, and various fetal vessels in clinical practice.
KeywordsUmbilical Artery Spiral Artery Blood Flow Volume Intervillous Space Uterine Blood Flow
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