11 McParland P, Steel SA, Pearce JMF. The clinical implications of absent or reversed end-diastolic frequencies in the umbilical artery flow velocity waveforms. EurJI Obstet Gynecol Reprod Biol 1991; 37: 15-23. 12 Fleischer A, Schulman H, Farmakides G, Bracero L, Blattner P, Randolph G. Umbilical artery velocity waveforms and intrauterine growth retardation. Am J Obstet Gynecol 1985; 151: 502-5...

AIM To assess the relationship between discordant umbilical arterial size and resultant blood flow parameters and determine the impact of discordance on fetal outcome. METHODS This is a descriptive, cross-sectional study of 200 patients with a singleton gestation, who underwent a fetal anatomy survey between 18 to 23 weeks of gestation, with documented umbilical cord morphological patterns an...

11 McParland P, Steel SA, Pearce JMF. The clinical implications of absent or reversed end-diastolic frequencies in the umbilical artery flow velocity waveforms. EurJI Obstet Gynecol Reprod Biol 1991; 37: 15-23. 12 Fleischer A, Schulman H, Farmakides G, Bracero L, Blattner P, Randolph G. Umbilical artery velocity waveforms and intrauterine growth retardation. Am J Obstet Gynecol 1985; 151: 502-5...

The present study was performed to compare serum concentrations of maternal and fetal angiogenic growth factors in IUGR (intrauterine growth restriction) and normal pregnancy at the time of delivery. VEGF (vascular endothelial growth factor), PlGF (placental growth factor), sFlt-1 (soluble fms-like tyrosine kinase 1), sKDR (soluble kinase domain receptor) and bFGF (basic fibroblast growth facto...

OBJECTIVES To determine the possible association between single umbilical artery (SUA) in the second trimester of pregnancy and the incidence of chromosomal abnormalities. To determine whether the presence of chromosomal defects in fetuses with SUA is related to the side of the missing artery. METHODS Color flow imaging of the fetal pelvis was used to determine the number of umbilical arterie...

OBJECTIVE To estimate the umbilical artery and vein blood volume flow using B-mode and Doppler ultrasound in the second and third trimesters of pregnancy. DESIGN This was a cross-sectional study of 129 singleton, healthy pregnancies at 23-33 weeks' gestation. The umbilical artery and vein cross-sectional area, time-averaged velocity and pulsatility index were measured in a free loop of cord, ...

Key points Human placental function is evaluated using non‐invasive Doppler ultrasound of umbilical and uterine artery pulsatility indices as measures resistance in vascular beds, while measurement oxygen consumption ( ) only possible during Caesarean delivery. This study shows the feasibility magnetic resonance imaging (MRI) utero to measure blood flow content vessels calculate delivery by gra...