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Mathematical Modeling of Intravascular Blood Coagulation under Wall Shear Stress
Oleksii S Rukhlenko1, Olga A Dudchenko2, Ksenia E Zlobina3
1National Research Center for Hematology, Moscow, Russia; Moscow Institute of Physics and Technology, Dolgoprudny, Russia; Cherkasy National University, Cherkasy, Ukraine.
High shear stress at arterial stenosis can increase vessel wall permeability, initiating blood coagulation. Our model shows small plaques (<50% lumen reduction) pose significant atherothrombosis risks, impacting stenting guidelines.
Area of Science:
- Cardiovascular Science
- Biomedical Engineering
- Mathematical Biology
Background:
- Shear stress at arterial stenosis can alter vessel wall permeability.
- This change may initiate intravascular blood coagulation and thrombus formation.
- Atherosclerotic plaques are a key factor in atherothrombosis.
Purpose of the Study:
- To investigate shear stress-induced permeability's influence on atherosclerotic plaque thrombogenicity.
- To develop a mathematical model for analyzing thrombus formation dynamics.
- To explore the role of plaque geometry and blood flow intensity.
Main Methods:
- Mathematical modeling of shear stress-induced permeability.
- Numerical analysis of blood coagulation activation.
- Parametric studies on plaque geometry and blood flow.
Main Results:
- Identified two hydrodynamic thresholds for blood coagulation activation.
- Revealed typical scenarios of thrombus formation.
- Described the dependence of coagulation on blood flow and plaque geometry.
Conclusions:
- Relatively small plaques (<50% lumen reduction) play a significant role in atherothrombosis.
- Findings have implications for current stenting guidelines.
- Highlights the importance of shear stress-induced permeability in thrombogenesis.
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