A simple approach for image-based modelling of the heart that enables robust simulation of highly heterogeneous electrical excitation.

A simple approach for image-based modelling of the heart that enables robust simulation of highly heterogeneous electrical excitation.
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DOI:
10.1038/s41598-023-39244-w
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发表时间:
2023-09-13
期刊:
影响因子:
4.6
通讯作者:
Benson, Alan P.
Benson, Alan P.
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Colman, Michael A.;Benson, Alan P.

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心脏组织结构的重构,包括细胞间的电耦合,是与心律失常相关的复杂和不同种类兴奋模式的主要决定因素。评估局部组织结构决定全球心律失常兴奋模式的精确机制是一项重大挑战,可能对开发有效的治疗策略至关重要。计算模型是研究心律失常的关键工具,然而已建立的器官尺度模型方法不适合捕捉局部传导异质性的影响;需要一种新的方法来提供这种多尺度的机制洞察力。我们提出了一种从根本上简单而强大的方法来模拟高度异质的全心模型中的电兴奋,该模型利用了心肌的潜在离散性。初步模拟表明,该方法能够捕捉较低的传导速度,并在一定范围内再现波击穿和再入发展过程。
Remodelling of cardiac tissue structure, including intercellular electrical coupling, is a major determinant of the complex and heterogeneous excitation patterns associated with cardiac arrhythmias. Evaluation of the precise mechanisms by which local tissue structure determines global arrhythmic excitation patterns is a major challenge that may be critically important for the development of effective treatment strategies. Computational modelling is a key tool in the study of cardiac arrhythmias, yet the established approaches for organ-scale modelling are unsuitable to capture the impact of local conduction heterogeneities; a novel approach is required to provide this multi-scale mechanistic insight. We present a fundamentally simple yet powerful approach to simulate electrical excitation in highly heterogeneous whole-heart models that exploits the underlying discreteness of the myocardium. Preliminary simulations demonstrate that this approach can capture lower conduction velocities and reproduce wave breakdown and the development of re-entry in a range of conditions.
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