Spiral wave drift and complex-oscillatory spiral waves caused by heterogeneities in two-dimensional in vitro cardiac tissues

Sung Jae Woo, Jin Hee Hong, Tae Yun Kim, Byung Wook Bae, Kyoung J. Lee

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Understanding spiral reentry wave dynamics in cardiac systems is important since it underlies various cardiac arrhythmia including cardiac fibrillation. Primary cultures of dissociated cardiac cells have been a convenient and useful system for studying cardiac wave dynamics, since one can carry out systematic and quantitative studies with them under well-controlled environments. One key drawback of the dissociated cell culture is that, inevitably, some spatial inhomogeneities in terms of cell types and density, and/or the degree of gap junction connectivity, are introduced to the system during the preparation. These unintentional spatial inhomogeneities can cause some non-trivial wave dynamics, for example, the entrainment dynamics among different spiral waves and the generation of complex-oscillatory spiral waves. The aim of this paper is to quantify these general phenomena in an in vitro cardiac system and provide explanations for them with a simple physiological model having some realistic spatial inhomogeneities incorporated.

Original languageEnglish
Article number015005
JournalNew Journal of Physics
Volume10
DOIs
Publication statusPublished - 2008 Jan 31

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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