BACKGROUND: Umbilical vein constriction at the fetal abdominal inlet is a common finding
after week 13, when the period of umbilical herniation is brought to an end. AIMS: To test the …

Objectives To determine the degree of constriction of the umbilical vein at the abdominal
wall in the second half of pregnancy. Methods A total of 283 low‐risk singleton pregnancies …

Objectives To investigate whether umbilical venous velocity and venous velocity pulsation
are associated with umbilical vein diameter, umbilical ring diameter and umbilical cord …

Objective To determine the occurrence of high venous velocities at the umbilical ring in the
normal early second trimester, based on the assumption that a narrow umbilical ring may …

Objective To evaluate the effect of umbilical vein (UV) blood flow measured by color-directed
pulsed-wave Doppler on perinatal outcome of fetuses with lean and/or hypocoiled umbilical …

While it is now recognized that umbilical cord clamping (UCC) at birth is not necessarily an
innocuous act, there is still much confusion concerning the potential benefits and harms of …

Objective This study investigated the relationship between umbilical vein diameter and cord
length and fetal outcome in low-risk pregnancies (fetuses appropriate for gestational age …

Objective To investigate the relationship of umbilical vein flow (UVF) measured close to term
with abnormal fetal growth and adverse perinatal outcome in a cohort of pregnancies at low …

The aim was to determine experimentally the factors that increase the risk of venous
occlusion by applying a standardised tightening force to isolated perfused umbilical cords …

Introduction Numerous studies have revealed the impact of umbilical cord (UC) length on
fetal perfusion; abundant data implicate abnormal UC length to neurological delay and …