Abstract
Pressure wave produced by a stenotic vessel was analyzed in terms of the stiffness index, augmentation index and reflection index. An understanding of blood pressure wave reflection is key to developing non-invasive and easy-to-use diagnostic methods. The purpose of this study was to use computational fluid dynamics to analyze blood pressure waves and understand blood pressure wave reflections in stenotic vessels. The lattice Boltzmann method was used with the impedance boundary condition for the blood pressure waves. Variations in blood pressure wave parameters according to different degrees of stenosis were analyzed, in addition to fluid dynamic properties, including flow energy loss. We found that blood pressure wave reflection is related to flow energy loss from stenosis.
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Recommended by Associate Editor Jaeseon Lee
Joon Sang Lee is an Associate Professor of School of Department of Mechanical Engineering, Yonsei University, Seoul, Republic of Korea. He received his doctor degree in Mechanical Engineering from Iowa State University. His research interests is mainly on computational fluid dynamics, including biomechanics and hemodynamics and multi-scale fluid dynamics.
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Kim, Y.W., Kim, Y.H. & Lee, J.S. Analysis of wave reflection of a stenotic vessel blood pressure wave using the lattice Boltzmann method and impedance boundary condition. J Mech Sci Technol 30, 3719–3728 (2016). https://doi.org/10.1007/s12206-016-0734-0
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DOI: https://doi.org/10.1007/s12206-016-0734-0