Objectives To compare the value of three-dimensional placental volume at 12 weeks and uterine artery Doppler at 22 weeks for predicting pregnancy-induced hypertension (PIH), pre-eclampsia and fetal growth restriction in a low-risk population.
Methods
The combination of placental volume measurement and uterine artery Doppler in the first trimester may identify women at risk for subsequent development of pregnancy complications.
Although uterine perfusion in the same woman is similar in the first and second pregnancies, 'notching' appears much more frequently in the first pregnancy reflecting the fact that the decidual embedding of the trophoblast is less problematic in the second pregnancy. Nevertheless the subgroup with an early diastolic notch in their first pregnancy is four times more likely to develop a notch in a second pregnancy.
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