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Maximal wall shear stress in arterial stenoses: application to the internal carotid arteries

Lorthois, Sylvie and Lagrée, Pierre-Yves and Marc-Vergnes, Jean-Pierre and Cassot, Francis Maximal wall shear stress in arterial stenoses: application to the internal carotid arteries. (2000) Journal of Biomechanical Engineering, 122 (6). 661-666. ISSN 0148-0731

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Official URL: https://doi.org/10.1115/1.1318907


Maximal wall shear stress (MWSS) in the convergent part of a stenosis is calculated by the interactive boundary-layer theory. A dimensional analysis of the problem shows that MWSS depends only on a few measurable parameters. A simple relationship between MWSS and these parameters is obtained, validated, and used to calculate the magnitude of MWSS in a carotid stenosis, as a function of the patency of the circle of Willis and the stenotic pattern. This demonstrates the huge effect of collateral pathways. Elevated MWSS are observed even in moderate stenoses, provided they are associated with a contralateral occlusion, a large anterior, and narrow posterior communicating arteries, suggesting a potential risk of embolus release in this configuration.

Item Type:Article
HAL Id:hal-03604804
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Santé et de la Recherche Médicale - INSERM (FRANCE)
Other partners > Sorbonne Université (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Centre Hospitalier Universitaire de Toulouse - CHU Toulouse (FRANCE)
Laboratory name:
Deposited On:12 Dec 2019 11:34

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