Basic mechanisms of cardiac impulse propagation and associated arrhythmias.

Abstract:

:Propagation of excitation in the heart involves action potential (AP) generation by cardiac cells and its propagation in the multicellular tissue. AP conduction is the outcome of complex interactions between cellular electrical activity, electrical cell-to-cell communication, and the cardiac tissue structure. As shown in this review, strong interactions occur among these determinants of electrical impulse propagation. A special form of conduction that underlies many cardiac arrhythmias involves circulating excitation. In this situation, the curvature of the propagating excitation wavefront and the interaction of the wavefront with the repolarization tail of the preceding wave are additional important determinants of impulse propagation. This review attempts to synthesize results from computer simulations and experimental preparations to define mechanisms and biophysical principles that govern normal and abnormal conduction in the heart.

journal_name

Physiol Rev

journal_title

Physiological reviews

authors

Kléber AG,Rudy Y

doi

10.1152/physrev.00025.2003

subject

Has Abstract

pub_date

2004-04-01 00:00:00

pages

431-88

issue

2

eissn

0031-9333

issn

1522-1210

pii

84/2/431

journal_volume

84

pub_type

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