Role of Ultrasound / Indications
Provides important information on the conversion process of spiral arteries into Uteroplacental arteries
Provides flow resistance information on the maternal surface of the placenta
Preeclampsia Screening in the first and second trimester
Fetal Growth restriction (IUGR) in early pregnancy
Patients with Pregnancy induced Hypertension
Early SGA Fetuses at 20 weeks
Preeclampsia is a major cause of maternal and perinatal morbidity and mortality , affecting 2-3 % of all pregnancies.
In a normal pregnancy
Placental cells invade the inner third of the myometrium –
The entire length of the maternal spiral arteries dilate to optimise delivery of oxygen and nutrients to the fetus.
In women with preeclampsia
There is a failure of trophoblast invasion
The spiral arteries maintain muscle elastic coating so impedance to blood flow persists.