label: Elevated umbilical artery pulsatility
label_lc: elevated umbilical artery pulsatility
description: "Human umbilical artery (UA) blood flow pulsatility measured by Doppler ultrasound is a widely used biomarker for the detection of elevated placental vascular resistance. Elevated UA pulsatility, which in the most extreme cases manifests as absent or even reversed end-diastolic velocity, is associated with intrauterine growth restriction (IUGR) and still-birth."