Vinyl catheters were inserted into an umbilical vein, a hindlimb vein and either an umbilical or dorsalis pedis artery in 9 lamb fetuses with gestational ages of 110 to 147 days. The lambs were then delivered from the uterus, but placental flow was maintained. Cannulating electromagnetic flow transducers were inserted into both umbilical veins. Antipyrine solution was constantly infused into th...

OBJECTIVE To determine the diameter changes of umbilical cord components in intrauterine growth restriction (IUGR) fetuses comparative with normal growth fetuses by using the ultrasonogram. MATERIAL AND METHOD A cross sectional study was performed with 140 singleton pregnant women who was attended at Maternal-Fetal Medicine unit, Thammasat University Hospital between June, 2007 to May, 2009. ...

The purpose of this study was to investigate the expression of intercellular adhesion molecule-1 (ICAM-1) in umbilical vascular of pregnant women with gestational diabetes mellitus (GDM) and the clinical significance. A total of 103 pregnant women with GDM were selected in the First Hospital of Lanzhou University and the Second Affiliated Hospital of Xi'an Jiaotong University from January 2016 ...

We describe a case of atypical hypoxic-ischemic encephalopathy (HIE) in a neonate following a normal pregnancy and delivery who was found to have an umbilical vein thrombosis. The infant arrived to our center with continuous bicycling movement of her lower extremities. She had a continuous electroencephalogram that showed burst suppression and magnetic resonance imaging of the brain showed diff...

Activation of cyclic nucleotide-dependent signaling pathways leads to relaxation of bovine carotid artery smooth muscle contractions and is associated with increased phosphorylation of the small heat shock-related protein (HSP20). Previous reports have shown that human umbilical artery smooth muscle is uniquely resistant to cyclic nucleotide-dependent relaxation, and HSP20 is not phosphorylated...

Raised values of creatine kinase BB (CKBB) in umbilical cord serum were obtained with some normal babies and those with fetal distress. Further investigation showed that the umbilical artery and vein tissue contain high CKBB activity, indicating that some cord blood samples may not solely reflect CKBB liberated from the brain.

A modified technique for umbilical artery catheterization was assessed in babies in whom conventional method failed or if the cord was dry. Success rate attained with the modified technique was 90% (19/21). This modified technique could provide an easier and faster method for successful umbilical arterial catheterization.

The present study was conducted to determine the impact of suppressing trophoblast remodeling of the uterine spiral arteries by prematurely elevating estrogen levels in the first trimester of baboon pregnancy on uterine and umbilical blood flow dynamics. Uteroplacental blood flow was assessed by Doppler ultrasonography after acute administration of saline (basal state) and serotonin on days 60,...

AIM To determine whether antenatal administration of thyrotrophin releasing hormone (TRH), to promote lung maturation, alters blood flow through the fetal middle cerebral, umbilical artery, or ductus arteriosus and through the maternal uterine arteries. METHODS The effect of transplacentally administered TRH on the fetal circulation was prospectively evaluated in 30 patients between 24 and 34...

The fetal internal carotid artery and umbilical artery flow velocity time waveforms were studied in 17 consecutive twin pregnancies. The pulsatility index was calculated for each fetus in each artery as an index of vascular resistance. All studies were done within 14 days before delivery. In 8 pregnancies both fetuses were of birthweight appropriate for gestational age; whereas, in 9 patients o...