© 2001 by European Society of Cardiology
Copyright © 2000, European Society of Cardiology
Multiple interactions determine cellular electrical processes in the multicellular tissue
Cardiac Bioelectricity Research and Training Center, 509 Wickenden Building, Case Western Reserve University, Cleveland, OH 44106-7207, USA
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Received 19 April 2001;
| The first 10% of the full text of this article appears below. |
See article by Verkerk et al. [5] (pages 30–40) in this issue.
"Things should be made as simple as possible, but not any simpler" Albert Einstein
The traditional classification of cardiac arrhythmias makes a distinction between focal mechanisms due to abnormal electrophysiological functioning of single cells, and propagation-related mechanisms due to abnormal conduction in the multicellular tissue [1]. Single-cell arrhythmogenecity is associated with triggered activity and after-depolarizations, which are subdivided into early (EAD) and delayed (DAD) afterdepolarizations based on their timing relative to the action potential (AP) [2]. Propagation-based arrhythmias include various types of reentry [3] and spiral-wave activity [4] that involve many interconnected cardiac cells and can occur on different spatial scales (e.g. micro- or macro-reentry). The