Umbilical vein constriction at the umbilical ring: a longitudinal study

Constriction of Human Umbilical Arteries

Experiments on perfused segments or isolated rings of human umbilical artery showed that the magnitude of their contraction in response to bradykinin, epinephrine, or serotonin depended on the P02 of the perfusing or bathing solution. Constriction to bradykinin varied directly with the O2 tension and was greatest when the Po2 was approximately that of umbilical arterial blood during the transit...

Balloon atrial septostomy via the umbilical vein.

VGB3 Induces Apoptosis by Inhibiting Phosphorylation of NF-κB p65 at Serine 536 in the Human Umbilical Vein Endothelial Cells

Background and objectives: Nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) inhibition results in an increase in apoptosis. It has been demonstrated that NF-κB subunit p65 phosphorylation at the IκB kinase phosphorylation site serine 536 (Ser536) is essential for the NF-κB nuclear translocation and activation. Therefore, NF-κB can be downregulated by suppressing its phosph...

Fetal Intra-abdominal Umbilical Vein Aneurysm.

Importance Fetal umbilical vein aneurysm is an uncommon anomaly that accounts for approximately 4% of umbilical cord abnormalities. The rate of intrauterine fetal death is reported to be approximately 4% to 5%, higher than the background rate of 0.7% that is generally reported during pregnancy. Objective The aim of this study was to review the pathophysiology, diagnosis, and clinical manageme...

Complications of umbilical vein catherisation. Case Report

BACKGROUND Umbilical vein catheterization is a relatively easy procedure performed routinely on the neonate intensive care units. It provides a fast central vein access, but some complications have been described in the literature. CASE REPORTS We presented a case report of a premature infant (34 hbd) with extravasation of the parenteral nutrition and drugs to the liver after umbilical vein c...