Jet collisions and vortex reversal in the human left ventricle

JOURNAL OF BIOMECHANICS

卷:78

Article

Di Labbio, Giuseppe¹  Kadem, Lyes¹ 

[1] Concordia Univ, Dept Mech Ind & Aerosp Engn, Lab Cardiovasc Fluid Dynam, 1455 de Maisonneuve Blvd W, Montreal, PQ H3G 1M8, Canada

关键词: Aortic regurgitation;    Left ventricle;    Energy loss;    Vortex reversal;    In vitro;   

DOI  :  10.1016/j.jbiomech.2018.07.023

来源: Elsevier

【 摘 要 】

Unnatural dynamics of the notorious vortex in the left ventricle is often associated with cardiac disease. Understanding how different cardiac diseases alter the flow physics in the left ventricle may therefore provide a powerful tool for disease detection. In this work, the fluid dynamics in the left ventricle subject to different severities of aortic regurgitation is experimentally investigated by performing time-resolved particle image velocimetry in a left heart duplicator. Diastolic vortex reversal was observed in the left ventricle accompanied by an increase in viscous energy dissipation. Vortex dynamics and energy dissipation may provide useful insights on sub-optimal flow patterns in the left ventricle. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

Free