conditions prerequisite to a reentry circuit are electrophysiological changes , namely conduction delay and block which are incurred by virtue of changes in the myocardial tissue due to scarring , ischemia or fatty infiltration and result in an abnormal action potential , increased intracellular resistance and reduction in intercellular coupling ( intercalated discs ) .
C0027061
myocardial tissue
C0684215
intercalated discs