Hepatic Hemodynamics
Hepatic Hemodynamics - Related Videos
10:48
Intravital Microscopy Imaging of the Liver following Leishmania Infection: An Assessment of Hepatic Hemodynamics
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Cited by 10 •
2015
This article reports on a detailed method for the dynamic measurement and quantification of blood flow velocity within individual blood vessels of the mouse liver vasculature using intravital microscopy imaging in combination with a specific methodology for image acquisition and analysis.
16:09
Monitoring of Systemic and Hepatic Hemodynamic Parameters in Mice
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Cited by 32 •
2014
This film demonstrates how to acquire systemic and hepatic hemodynamics in mice. The whole monitoring includes acquisition of vital parameters, systemic blood pressure, central venous pressure, common hepatic artery flow rate, and portal vein pressure as well as the portal flow rate in mice.
10:40
Visualization and Analysis of Blood Flow and Oxygen Consumption in Hepatic Microcirculation: Application to an Acute Hepatitis Model
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Cited by 10 •
2012
An optical system was developed to visualize hepatic microcirculation with FITC-labeled erythrocytes and to measure the partial pressure of oxygen in the microvessels with laser-assisted phosphorimetry. This method can be used to investigate physiological and pathological mechanisms by analyzing microvascular structure, diameter, blood flow velocity, and oxygen tension.
09:37
Invasive Hemodynamic Characterization of the Portal-hypertensive Syndrome in Cirrhotic Rats
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Cited by 12 •
2018
Here we describe a detailed protocol for invasive measurements of hemodynamic parameters including portal pressure, splanchnic blood flow, and systemic hemodynamics in order to characterize the portal hypertensive syndrome in rats.
07:10
Measurement of the Hepatic Venous Pressure Gradient and Transjugular Liver Biopsy
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Cited by 110 •
2020
Here, we present a protocol for measurement of hepatic venous pressure gradient (HVPG),the gold standard to diagnose clinically significant portal hypertension. Moreover, we describe how to perform a transjugular liver biopsy within the same session.
FAQs
The two inflow pathways do not function as isolated routes. Portal venous and hepatic arterial blood mix within the hepatic sinusoids, where low-pressure flow supports exchange between blood and hepatocytes. As a result, a change in either source can alter the hemodynamic conditions encountered by liver cells and affect the balance of hepatic blood supply.
When portal flow changes, the hepatic arterial buffer response adjusts arterial inflow. This compensatory mechanism helps regulate the amount of blood entering through the hepatic artery rather than treating portal and arterial circulation as completely independent. Its activity is therefore important when interpreting how disturbances in portal circulation influence overall hepatic perfusion.
Blood-flow measurements alone do not describe the entire circulatory state of the liver. Pressure and vascular resistance provide additional information about how easily blood moves through the hepatic vascular system and whether abnormal loading conditions may be present. Considering these variables together supports a more complete interpretation of portal circulation and liver dysfunction.
Doppler ultrasonography provides a noninvasive way to assess blood flow within the liver’s vascular system. In clinical evaluation, it can be used alongside pressure measurements and vascular imaging to investigate hemodynamic abnormalities. These assessments help clinicians support diagnosis, estimate prognosis, and plan treatment when portal circulation or liver function is compromised.
Pressure measurements and vascular imaging are useful when clinicians need more than a general assessment of liver blood flow. They help characterize the vascular conditions associated with portal hypertension, cirrhosis, and liver failure. The resulting information can contribute to diagnosis, prognostic assessment, and decisions about treatment planning in affected patients.
These conditions can alter blood flow, pressure, and vascular resistance within the liver and portal circulation. Assessing those changes helps explain the circulatory disturbances associated with disease rather than viewing liver dysfunction only through metabolic or cellular effects. Hemodynamic findings can consequently support diagnosis, prognosis, and selection of an appropriate treatment strategy.