Reference ranges for umbilical vein blood flow in the second half of pregnancy based on longitudinal data

2005 ◽  
Vol 25 (2) ◽  
pp. 99-111 ◽  
Author(s):  
Ganesh Acharya ◽  
Tom Wilsgaard ◽  
Gro K. Rosvold Berntsen ◽  
Jan Martin Maltau ◽  
Torvid Kiserud
Keyword(s):  
Blood Flow ◽  
Longitudinal Data ◽  
Umbilical Vein ◽  
Reference Ranges

P07.13: Reference ranges for umbilical vein blood flow in the second half of pregnancy based on longitudinal data

2004 ◽  
Vol 24 (3) ◽  
pp. 311-311
Author(s):  
G. Acharya ◽  
T. Wilsgaard ◽  
G. K. R. Berntsen ◽  
J. M. Maltau ◽  
T. Kiserud
Keyword(s):  
Blood Flow ◽  
Longitudinal Data ◽  
Umbilical Vein ◽  
Reference Ranges

Z ‐Score Reference Ranges for Umbilical Vein Diameter and Blood Flow Volume in Normal Fetuses

2021 ◽  
Author(s):  
Ling Wang ◽  
Qichang Zhou ◽  
Chunhui Zhou ◽  
Jiqing Wang ◽  
Chunlan Shi ◽  
...  
Keyword(s):  
Blood Flow ◽  
Umbilical Vein ◽  
Reference Ranges ◽  
Flow Volume ◽  
Z Score ◽  
Blood Flow Volume ◽  
Vein Diameter

scholarly journals Inhibitory Effects of seco-Triterpenoids from Acanthopanax sessiliflorus Fruits on HUVEC Invasion and ACE Activity

2015 ◽  
Vol 10 (9) ◽  
pp. 1934578X1501000 ◽  
Author(s):  
Jin-Won Lee ◽  
Nam-In Baek ◽  
Dae-Young Lee
Keyword(s):  
Blood Flow ◽  
Crude Extract ◽  
Umbilical Vein ◽  
Inhibitory Effect ◽  
Inhibitory Effects ◽  
Ace Inhibitory Activity ◽  
Dioic Acid ◽  
Acanthopanax Sessiliflorus ◽  
Ace Activity ◽  
Very High

This study was conducted to investigate the effects of the crude extract from Acanthopanax sessiliflorus fruits and the isolated seco-triterpenoids from the crude extract on blood flow in human umbilical vein endothelial cell (HUVEC) invasion assay and angiotensin converting enzyme (ACE) inhibitory activity assay. On the basis of DMSO, the extent of HUVECs'invasion was remarkably decreased with crude extract concentrations of 400 and 1000 μg/mL. Additionally, the extent of the HUVEC invasion inhibitory effect in 400 and 1000 μg/mL of acanthosessilioside F were 55.8% and 72.4%, respectively. In addition, the maximum extent of the HUVEC invasion inhibitory effect of 22-α-hydroxychiisanoside was 88.9%. The IC50 value of the inhibitory effect on ACE activity in the crude extract was 4 μg/mL. The isolated seco-triterpenoids, 22α-hydroxychiisanogenin, 3,4- seco-lupan-20(30)-en-3,28-dioic acid, (1 R)-1,4-epoxy-11α,22α-hydroxy-3,4- seco-lupan-20(30)-en-3,28-dioicacid, (+)-divaroside, and chiisanosidehad showed very high inhibitory effects on ACE activity, ranging from 1.8 to 2.9 üg/mL, which is much higher than the 150.0 üg/mL effect of aspirin. These results suggest that the crude extract from Acanthopanax sessiliflorus fruits and the isolated seco-triterpenoids from the crude extract enhance the blood flow effect by decreasing ACE activity.

scholarly journals Modern representation about venous circulation in fetoplacental system

1999 ◽  
Vol 48 (3) ◽  
pp. 10-14
Author(s):  
E. K. Ailamazyan ◽  
N. N. Konstantinova ◽  
A. A. Polyanin ◽  
I. U. Kogan
Keyword(s):  
Blood Flow ◽  
Gestational Age ◽  
Venous Return ◽  
Umbilical Vein ◽  
Functional Importance ◽  
Venous Circulation ◽  
The Given ◽  
Venous Vessel

The development of venous circulation in fetoplacental system is one of the least known problems in perinatology. In work by a method of ultrasonic Doppler is investigated the development of blood flow in umbilical vein, v. cava inferior and jugulaar veins of a fetus with 8-th on 40-th week of normally developing pregnancy. It is shown, that the parameters of blood flow in the given vessels depends on gestational age of a fetus, conditions of venous return to heart and functional importance of venous vessel.

Fetal oxygen uptake, oxygenation, and acid-base balance as a function of uterine blood flow

1983 ◽  
Vol 244 (6) ◽  
pp. H749-H755 ◽  
Author(s):  
R. B. Wilkening ◽  
G. Meschia
Keyword(s):  
Blood Flow ◽  
Base Excess ◽  
Umbilical Vein ◽  
Delivery Rate ◽  
Uterine Blood Flow ◽  
O2 Uptake ◽  
Acid Base Balance ◽  
Venous Pco2 ◽  
Base Balance ◽  
O2 Delivery

The rate of O2 delivery to the pregnant uterus (FaO2) was decreased in chronic sheep preparations by mechanical occlusion of uterine blood flow. The relationship of uterine venous O2 saturation (SVO2) to FaO2 was curvilinear with convexity toward the SVO2 axis. As SVO2 decreased, there was a decrease in uterine and umbilical venous O2 tension (PO2), with no appreciable reduction of the PO2 difference between the two veins and a decrease in the umbilical vein O2 delivery rate. Fetal O2 uptake and base excess remained normal as the umbilical vein O2 delivery rate was reduced from 1.1 to 0.6 mmol . min-1 . kg-1 but decreased markedly at an O2 delivery rate less than 0.5. Umbilical venous CO2 tension (PCO2) was higher than, and strongly correlated with, uterine venous PCO2 (R = 0.954). These observations support a venous equilibration model of ovine placental exchange and demonstrate that under normal physiological conditions the O2 supply to the fetal lamb is approximately twice the value necessary to maintain an adequate fetal O2 uptake and a normal fetal base excess.

scholarly journals Prenatal diagnosis of varix of the fetal intraabdominal umbilical vein: Case report

2008 ◽  
Vol 61 (1-2) ◽  
pp. 75-78 ◽  
Author(s):  
Aleksandra Novakov-Mikic ◽  
Sinisa Stojic
Keyword(s):  
Blood Flow ◽  
Case Report ◽  
Prenatal Diagnosis ◽  
Anterior Abdominal Wall ◽  
Umbilical Vein ◽  
Color Doppler ◽  
Contemporary Literature ◽  
Ultrasound Scan ◽  
Lower Edge ◽  
Doppler Examination

Varix of intraabdominal part of fetal umbilical vein is during a prenatal ultrasound scan seen as a hypoechogenic mass between anterior abdominal wall and lower edge of liver, and the diagnosis is confirmed when blood flow is seen during color Doppler examination. A case of prenatal diagnosis of this abnormality is presented, with review of contemporary literature regarding diagnosis and management as well as the outcome of such pregnancies.

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