Effect of the architecture of the left ventricle on the speed of the excitation wave in muscle fibers View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2016-07

AUTHORS

T. V. Nezlobinsky, S. F. Pravdin, L. B. Katsnelson, O. E. Solovyova

ABSTRACT

It is known that preferential paths for the propagation of an electrical excitation wave in the human ventricular myocardium are associated with muscle fibers in tissue. The speed of the excitation wave along a fiber is several times higher than that across the direction of the fiber. To estimate the effect of the architecture and anisotropy of the myocardium of the left ventricle on the process of its electrical activation, we have studied the relation between the speed of the electrical excitation wave in a one-dimensional isolated myocardial fiber consisting of sequentially coupled cardiomyocytes and in an identical fiber located in the wall of a threedimensional anatomical model of the left ventricle. It has been shown that the speed of a wavefront along the fiber in the three-dimensional myocardial tissue is much higher than that in the one-dimensional fiber. The acceleration of the signal is due to the rotation of directions of fibers in the wall and to the position of the excitation wavefront with respect to the direction of this fiber. The observed phenomenon is caused by the approach of the excitable tissue with rotational anisotropy in its properties to a pseudoisotropic tissue. More... »

PAGES

124-129

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0021364016140101

DOI

http://dx.doi.org/10.1134/s0021364016140101

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1037610621


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