Simulation of Ectopic Pacemakers in the Heart: Multiple Ectopic Beats Generated by Reentry inside Fibrotic Regions

Figure 8

Reentry of action potential generated by the heterogeneous structure of the tissue in the discrete model. (a) Generation of the traveling wave in the bottom part of the tissue ( ms). (b) Wave rapidly propagates to the upper part of the tissue transversely to the fibers direction ( ms). (c) A piece of the wave reenters into the tissue ( ms). (d) New waves are generated and eventually a repeated reentry is formed mimicking a spiral wave ( ms).