Prospective Evaluation of Uterine Artery Flow Velocity Waveforms at 12–14 and 22–24 Weeks of Gestation in Relation to Pregnancy Outcome and Birth Weight

The absence or early disappearance of uterine artery notches is associated with fewer complications related to uteroplacental insufficiency and normal birth weight, whereas their late and partial disappearance or bilateral persistence tends to compromise the prognosis.