scholarly journals The Carotid Sinus as a Viscometer

Diagnostics ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 924
Author(s):  
Andrew Iskander ◽  
Rotem Naftalovich ◽  
Niema M. Pahlevan
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Carotid Artery ◽  
Normal Saline ◽  
Carotid Sinus ◽  
Blood Rheology ◽  
Hemodynamic Changes ◽  
Elegant Method

Our group thought the study by Lee and Kim entitled “Hemodynamic Changes in the Carotid Artery after Infusion of Normal Saline Using Computational Fluid Dynamics” was a very elegant method to discern the changes in blood rheology within the carotid sinus after administration of crystalloid [...]

scholarly journals Hemodynamic Changes in the Carotid Artery after Infusion of Normal Saline Using Computational Fluid Dynamics

Diagnostics ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 473
Author(s):  
Ui Yun Lee ◽  
Chul In Kim ◽  
Gyung Ho Chung ◽  
Jinmu Jung ◽  
Hyo Sung Kwak
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Shear Stress ◽  
Shear Rate ◽  
Carotid Artery ◽  
Normal Saline ◽  
Blood Viscosity ◽  
Internal Carotid ◽  
Hemodynamic Changes ◽  
Before And After

Purpose: To study the effect of the infusion of normal saline on hemodynamic changes in healthy volunteers using computational fluid dynamics (CFD) simulation. Methods: Eight healthy subjects participated and 16 carotid arteries were used for the CFD analysis. A one-liter intravenous infusion of normal saline was applied to the participants to observe the hemodynamic variations. Blood viscosity was measured before and after the injection of normal saline to apply the blood properties on the CFD modeling. Blood viscosity, shear rate, and wall shear stress were visually and quantitatively shown for the comparison between before and after the infusion of normal saline. Statistical analyses were performed to confirm the difference between the before and after groups. Results: After the infusion of normal saline, decreased blood viscosity was observed in the whole carotid artery. At the internal carotid artery, the recirculation zone with low intensity was found after the injection of normal saline. Increased shear rate and reduced wall shear stress was observed at the carotid bifurcation and internal carotid artery. The hemodynamic differences between before and after groups were statistically significant. Conclusions: The infusion of normal saline affected not only the overall changes of blood flow in the carotid artery but also the decrease of blood viscosity.

Computational Fluid Dynamics of Carotid Artery Blood Flow for Low-Gravity Environments

2021 ◽  
pp. 111-119
Author(s):  
Vishwajeet Shankhwar ◽  
Dilbag Singh ◽  
Renuka Garg ◽  
Kamleshwar Kumar Verma ◽  
K.K. Deepak
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Blood Flow ◽  
Carotid Artery ◽  
Artery Blood Flow ◽  
Low Gravity

Using Computational Fluid Dynamics to Design and Optimize a Novel Endovascular Procedure for Carotid Stenosis Repair

2008 ◽  
Author(s):  
Victoria Yeh ◽  
C. Alberto Figueroa ◽  
Andrea Les ◽  
Jacqueline P. Ho ◽  
Ronald Dalman ◽  
...  
Keyword(s):  
United States ◽  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Carotid Artery ◽  
Carotid Arteries ◽  
The United States ◽  
The Third ◽  
Cerebral Blood Supply ◽  
The Brain ◽  
Over Time

The carotid arteries, located in both sides of the neck, are critical to supplying oxygenated blood to the brain. Over time, atherosclerotic plaque may accumulate in these vessels, causing them to narrow, which results in a reduced cerebral blood supply. This condition is known as carotid artery stenosis. In addition, small pieces of this plaque may become dislodged and travel to the brain, resulting in a stroke. Seven hundred thousand Americans suffer a stroke in the United States each year, and 150,000 cases are fatal, making it the third leading cause of death in the United States.

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