Blood flow simulation during flow‐mediated dilation

Endothelial dysfunction is known to be the early stage of arteriosclerosis. The flow‐mediated dilation (FMD) test is the most commonly used method to diagnose the endothelial function. The test measures the maximum vasodilation (FMD response) on the brachial artery induced by the increases in blood...

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Bibliographic Details
Published in:Electronics and communications in Japan 2018-08, Vol.101 (8), p.19-26
Main Authors: Asami, Naoya, Yamazaki, Yoichi, Kamiyama, Yoshimi
Format: Article
Language:English
Subjects:
Arteriosclerosis
Blood flow
Computer simulation
Dilation
Flow simulation
Forearm
Hemodynamics
mathematical model
Probes
Ultrasonic scanners
Ultrasonic testing
Vasodilation
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Summary:Endothelial dysfunction is known to be the early stage of arteriosclerosis. The flow‐mediated dilation (FMD) test is the most commonly used method to diagnose the endothelial function. The test measures the maximum vasodilation (FMD response) on the brachial artery induced by the increases in blood flow after cuff deflation on the forearm. The vessel diameter must be captured clearly with the ultrasonic probe during the test. The vasodilation is induced in response to changes in the mechanical property of the vessel wall due to the blood flow stimulation. The changes are supposed to affect the pulsatile flow, but the influence of continuous behavior of vascular property on hemodynamics has not been clarified. In this study, in order to clarify the influence of the FMD response on hemodynamics, we propose a mathematical model that can simulate hemodynamics and vasomotor responses. As a result, it was shown that vessel wall dynamics affected the pulsatile flow. This result suggests that the endothelial function can be evaluated from blood flow.
ISSN:1942-9533
1942-9541
DOI:10.1002/ecj.12083