Figure 7. Engraftment arrhythmia is dynamically determined by graft–host connectedness.
A-C, incidence of graft-initiated host excitation across all pc levels for all five models, (A) with non-conductive scar, (B) scar replaced by host myocardium, and (C) slow-conducting scar. D, Model 2 at 1 × σ with non-conductive scar had 288 activation sites localized to a few grafts and Model 5 had 4 activation sites. E, when scar was replaced with host myocardium at 1 × σ, Model 2 had only 195 activation sites in more widespread locations whereas Model 5 had an increase to 24 activation sites. F, when non-conductive scar was replaced by slow-conducting scar, Model 2 had only 64 activation sites and Model 5 had none.