Fully Coupled Cardiac Electromechanics with Orthotropic Viscoelastic Effects

Date

2014-07-19

Author

CANSIZ, Baris
Dal, Hüsnü
KALISKE, Michael

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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The objective of this work is to reveal the influence of the experimentally observed passive viscous behaviour of the myocardium on the electromechanical activity by making use of computational approaches. For this purpose, we adopt the fully implicit finite element framework and the passive response is described by the orthotropic viscoelastic material model. The capabilities of the proposed model are assessed by comparing finite element simulations of spiral waves in a heart tissue for the elastic and viscoelastic formulations. The results obtained indicate that rate effects in the passive myocardium play a significant role on the active myocardium response by decreasing the electrical wave speed which consequently effects the evolution of spiral waves. We further investigate the influence of viscosity on the defibrillation phenomenon by means of a three-field coupled finite element formulation of bidomain electromechanics.

Subject Keywords

Coupled cardiac electromechanics, Viscoelasticity, Orthotropy, Finite element, Methodbidomain, Modelmonodomain model

URI

https://hdl.handle.net/11511/38972

DOI

https://doi.org/10.1016/j.piutam.2014.12.014

Collections

Department of Mechanical Engineering, Conference / Seminar

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Citation Formats

B. CANSIZ, H. Dal, and M. KALISKE, “Fully Coupled Cardiac Electromechanics with Orthotropic Viscoelastic Effects,” 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38972.