Effects of Cardiac Motion on Coronary Artery Flow rate

Hashemi Fard, Alireza; Fatouraee, Nasser

doi:10.22041/ijbme.2011.13133

Document Type : Full Research Paper

Authors

¹ M.Sc Graduate, Faculty of Biomedical Engineering, Science and Research Branch of Islamic Azad University

² Associate Professor, Faculty of Biomedical Engineering, Amirkabir University of Technology

10.22041/ijbme.2011.13133

Abstract

The heart muscle is supplied via the coronary arteries. The coronary arteries are deformed in each cardiac cycle by the contraction of the myocardium. The aim of this work was to investigate the effects of physiologically idealized cardiac-induced motion on flow rate in human left coronary arteries. The blood flow rate were numerically simulated in an elastic modeled left anterior descending coronary artery (LAD) having a uniform circular cross section. Blood was considered to be a non-Newtonian fluid and Arterial motion was specified based on monoplane physiologically idealized bending. Simulations were carried out with dynamic pressure difference conditions between inlet and outlet in both fixed and moving LAD models, to evaluate the relative importance of LAD motion, flow rate, and the interaction between motion and time-averaged flow rate. LAD motion was caused variations in time-averaged flow rate in the moving LAD models as compare as the fixed models. There was significant variability in the magnitude of this motion-induced flow variation. However, the magnification of time-averaged flow rate is depending to specification of the cardiac motion. Furthermore, the effects of pressure pulsatility dominated LAD motion induced effects; specifically, there were local flow variation and secondary flow in the simulations conducted in moving LAD models.

Keywords

Main Subjects

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Iranian Journal of Biomedical Engineering

Effects of Cardiac Motion on Coronary Artery Flow rate

References

References

Volume 5, Issue 1 - Serial Number 1
June 2011
Pages 1-12

Effects of Cardiac Motion on Coronary Artery Flow rate

References

References

Volume 5, Issue 1 - Serial Number 1June 2011Pages 1-12

Volume 5, Issue 1 - Serial Number 1
June 2011
Pages 1-12