Maximal Wall Shear Stress in Arterial Stenoses: Application to the Internal Carotid Arteries-Reference-Cited by-同舟云学术

Maximal Wall Shear Stress in Arterial Stenoses: Application to the Internal Carotid Arteries

Published:2000-08-10 Issue:6 Volume:122 Page:661-666
ISSN:0148-0731
Container-title:Journal of Biomechanical Engineering
language:en
Short-container-title:

Author:

Lorthois Sylvie¹,Lagre´e Pierre-Yves²,Marc-Vergnes Jean-Pierre³,Cassot Francis³

Affiliation:

1. Institut de Me´canique des Fluides de Toulouse, UMR CNRS 5502, 31400 Toulouse Cedex, France

2. Laboratoire de Mode´lisation en Me´canique, UMR CNRS 7607, 75252 Paris Cedex 5, France

3. I.N.S.E.R.M. U 455, C.H.U. Purpan, 31059 Toulouse Cedex, France

Abstract

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. [S0148-0731(00)01506-5]

Publisher

ASME International

Subject

Physiology (medical),Biomedical Engineering

Link

http://asmedigitalcollection.asme.org/biomechanical/article-pdf/122/6/661/5484626/661_1.pdf

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