Femoral to cerebral arterial blood flow redistribution and femoral vein distension during orthostatic tests after 4 days in the head-down tilt position or confinement

Measurement of arterial, portal, and hepatic venous plasma glucose concentrations were made in unanesthetized dogs whose hepatic vessels were previously catheterized. Total hepatic blood flow was measured by a modified Bromsulphalein method and hepatic arterial blood flow by a trapezoidal wave electromagnetic blood flowmeter. Serial biopsies of the liver were obtained, also under unanesthetized conditions, for measurement of glycogen and free glucose. Various doses of glucagon-free insulin were given by a single, rapid, intravenous injection or by a constant infusion directly into the liver via portal vein and via femoral vein or vena cava. Insulin was administered in normal, in adrenalectomized, in depancreatized, and in depancreatized-adrenalectomized dogs. Under each of the conditions observed insulin produced no decrease in the hepatic glucose output. Moreover, no increased hepatic glycogen or free glucose concentrations were found in hepatic biopsies after insulin administration.

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Changes in Umbilical Arterial Blood Flow by an Intraamniotic Distilled Water Infusion

Yearbook of Obstetrics Gynecology and Women s Health ◽

10.1016/s1090-798x(08)70024-9 ◽

2007 ◽

Vol 2007 ◽

pp. 30-31

Author(s):

S.H. Ural

Keyword(s):

Blood Flow ◽

Arterial Blood Flow ◽

Distilled Water ◽

Arterial Blood ◽

Water Infusion

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Impact of Pre Transplant Transarterial Chemoembolization on Hepatic Arterial Blood Flow and Outcomes in Liver Transplantation

10.26226/morressier.58eb975dd462b80290b50084 ◽

2017 ◽

Author(s):

Siddharth Jain

Keyword(s):

Liver Transplantation ◽

Blood Flow ◽

Transarterial Chemoembolization ◽

Arterial Blood Flow ◽

Hepatic Arterial Blood Flow ◽

Arterial Blood

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Modeling Elastic Walls in Lattice Boltzmann Simulations of Arterial Blood Flow

SNE Simulation Notes Europe ◽

10.11128/sne.23.tn.10189 ◽

2013 ◽

Vol 23 (2) ◽

Author(s):

Xenia Descovich ◽

Giuseppe Pontrelli ◽

Sauro Succi ◽

Simone Melchionna ◽

Manfred Bammer

Keyword(s):

Blood Flow ◽

Lattice Boltzmann ◽

Arterial Blood Flow ◽

Arterial Blood ◽

Lattice Boltzmann Simulations ◽

Elastic Walls

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Sustained Inflation Reduces Pulmonary Blood Flow during Resuscitation with an Intact Cord

Children ◽

10.3390/children8050353 ◽

2021 ◽

Vol 8 (5) ◽

pp. 353

Author(s):

Jayasree Nair ◽

Lauren Davidson ◽

Sylvia Gugino ◽

Carmon Koenigsknecht ◽

Justin Helman ◽

...

Keyword(s):

Blood Flow ◽

Perinatal Asphyxia ◽

Arterial Blood Flow ◽

Positive Pressure ◽

Optimal Timing ◽

Delayed Cord Clamping ◽

Arterial Blood ◽

Cord Clamping ◽

Sustained Inflation ◽

Near Term

The optimal timing of cord clamping in asphyxia is not known. Our aims were to determine the effect of ventilation (sustained inflation–SI vs. positive pressure ventilation–V) with early (ECC) or delayed cord clamping (DCC) in asphyxiated near-term lambs. We hypothesized that SI with DCC improves gas exchange and hemodynamics in near-term lambs with asphyxial bradycardia. A total of 28 lambs were asphyxiated to a mean blood pressure of 22 mmHg. Lambs were randomized based on the timing of cord clamping (ECC—immediate, DCC—60 s) and mode of initial ventilation into five groups: ECC + V, ECC + SI, DCC, DCC + V and DCC + SI. The magnitude of placental transfusion was assessed using biotinylated RBC. Though an asphyxial bradycardia model, 2–3 lambs in each group were arrested. There was no difference in primary outcomes, the time to reach baseline carotid blood flow (CBF), HR ≥ 100 bpm or MBP ≥ 40 mmHg. SI reduced pulmonary (PBF) and umbilical venous (UV) blood flow without affecting CBF or umbilical arterial blood flow. A significant reduction in PBF with SI persisted for a few minutes after birth. In our model of perinatal asphyxia, an initial SI breath increased airway pressure, and reduced PBF and UV return with an intact cord. Further clinical studies evaluating the timing of cord clamping and ventilation strategy in asphyxiated infants are warranted.

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