A two-variable model robust to pacemaker behaviour for the dynamics of the cardiac action potential.
A two-variable model robust to pacemaker behaviour for the dynamics of the cardiac action potential.
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DOI:
10.1016/j.mbs.2016.08.010
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发表时间:
2016-11
影响因子:
4.3
通讯作者:
Niederer SA
中科院分区:
文献类型:
--
作者:
Corrado C;Niederer SA
Simplified cardiomyocyte electrophysiology model optimised for patient specific modelling. Modified Mitchell and Schaeffer model. No spurious pacemaker behaviour. Suitable for parameter fitting. Consistent leading order APD approximation. Ionic models with two state variables are routinely used in patient specific electro-physiology simulations due to the small number of parameters to be constrained and their computational tractability. Among these models, the Mitchell and Schaeffer (MS) action potential model is often used in ventricle electro-physiology due to its ability to reproduce the shape of the action potential and its restitution properties. However, for some choices of parameters characterising this ionic model, unwanted pacemaker behaviour is present. The absence of any a priori criterion to exclude unstable parameter combinations affects parameter fitting algorithms, as unphysiological solutions can only be discarded a posteriori. In this paper we propose an adaptation of the MS model that does not exhibit pacemaker behaviour for any combination of the parameters. The robustness to pacemaker behaviour makes this model suitable for inverse problem applications.
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影响因子:
20.1
作者:
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通讯作者:
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影响因子:
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