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Investigation of the Fatigue Properties of Mitral Valve Leaflets

[+] Author Affiliations
Nastaran Shahmansouri, Rosaire Mongrain

McGill University, Montreal, QC, CanadaMontreal Heart Institute, Montreal, QC, Canada

Farhad Javid, Damiano Pasini, Jorge Angeles, Marco Amabili

McGill University, Montreal, QC, Canada

Paper No. SBC2013-14758, pp. V01AT04A027; 2 pages
  • ASME 2013 Summer Bioengineering Conference
  • Volume 1A: Abdominal Aortic Aneurysms; Active and Reactive Soft Matter; Atherosclerosis; BioFluid Mechanics; Education; Biotransport Phenomena; Bone, Joint and Spine Mechanics; Brain Injury; Cardiac Mechanics; Cardiovascular Devices, Fluids and Imaging; Cartilage and Disc Mechanics; Cell and Tissue Engineering; Cerebral Aneurysms; Computational Biofluid Dynamics; Device Design, Human Dynamics, and Rehabilitation; Drug Delivery and Disease Treatment; Engineered Cellular Environments
  • Sunriver, Oregon, USA, June 26–29, 2013
  • Conference Sponsors: Bioengineering Division
  • ISBN: 978-0-7918-5560-7
  • Copyright © 2013 by ASME


Annulus dilation is one of the main causes of functional mitral regurgitation. Although the annulus dilation is usually accompanied by left ventricle dilation and dysfunction, the mechanical relation between them is not fully elucidated yet. In this paper, the assumption is made that the ventricular dysfunction increases the cyclic loading conditions on the mitral valve apparatus. This effect may cause fatigue and weaken the tissue. This hypothesis is investigated in vitro by applying increased cyclic loadings to the tissue and evaluating the tissue stiffness during the cycles. The results of this study show that the tissue loses its strength after cyclic fatigue loadings.

Copyright © 2013 by ASME



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