Background The umbilical artery (UA) Doppler pulsatility index is used clinically to detect
elevated feto-placental vascular resistance. However, this metric is confounded by variation …

Elevated umbilical artery pulsatility is a widely used biomarker for placental pathology
leading to intra-uterine growth restriction and, in severe cases, still-birth. It has been …

Aim: The goal of this study was to evaluate the umbilical and uterine Doppler velocimetry
waveforms for predicting the perinatal outcome of low-risk pregnancies at term. Methods: We …

Objective. The purpose of this study was to compare the screening efficiency of the umbilical
artery systolic to diastolic ratio (S/D), pulsatility index (PI), and absent end‐diastolic flow …

Current methods to detect placental vascular pathologies that monitor Doppler ultrasound
changes in umbilical artery (UA) pulsatility have only moderate diagnostic utility, particularly …

Doppler ultrasound waveforms from the fetal umbilical artery were analyzed by a new
quantitative technique. Normal pregnancy and cases of fetal growth failure were considered …

The pulsatile pattern of blood motion measured by Doppler ultrasound within the umbilical
artery is known to contain useful diagnostic information and is widely used to monitor …

Abnormally pulsatile umbilical artery (UA) Doppler ultrasound velocity waveforms are a
hallmark of severe or early onset placental-mediated intrauterine growth restriction (IUGR) …

Objectives To determine the relationship between blood flow in the fetal descending aorta
and discordant umbilical arteries (UAs). Methods Pulsed wave Doppler of both UAs and the …

Background Sexual dimorphism in placental size and function has been described. Whether
this influences the clinically important umbilical artery (UA) waveform remains controversial …