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Spiral Waves Generation Using an Eikonal-Reaction Cardiac Electrophysiology Model

Authors: Gassa, Narimane; Zemzemi, Nejib; Corrado, Cesare; Coudière, Yves;

Spiral Waves Generation Using an Eikonal-Reaction Cardiac Electrophysiology Model

Abstract

Aim: Computer models enabled the study of the fundamental mechanisms responsible for arrhythmias and have the potential of optimizing the clinical procedure for an individual patients pathology. The model complexity and the computational costs affecting computer models hamper their application on a routinely performed procedure. In this work, we aim to design a computer model suitable for clinical time scales.Methods: We adopt a (multi-front) eikonal model that adapts the conduction velocity to the underlying electrophysiology; we describe the diffusion current using a parametrised form, fitted to reproduce the monodomain profile. Results: We simulated spiral waves on a 3D tissue slab and bi-atrial anatomy. We compared the numerical results obtained with a monodomain formulation with those obtained with the new method. Both models provided the same pattern of the spiral waves. While the monodomain model presented slower propagation fronts, the eikonal model captured the correct value of the conduction velocity CV even using a coarse resolution. Conclusion: The eikonal model has the potential of enabling computer-guided procedures when adapts the conduction velocity to the underlying electrophysiology and characterises the diffusion current with a parametrised form.

International audience

Country
France
Subjects by Vocabulary

Microsoft Academic Graph classification: Work (thermodynamics) Cardiac electrophysiology Eikonal equation Computer science Mechanics Model complexity Spiral wave Diffusion current Monodomain model Spiral

Keywords

Atrial fibrillation, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, Eikonal model, Spiral Wave, Cardiac Electrophysiology

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