Fig. 10.
VT initiation due to functional conduction block in Pig 4 heart model using VARP. maps at different times show VT induction following the S1-S2 pacing protocol. Arrows represent successful propagation. Lined arrows represent conduction block. The S2 beat blocked at the BZ at t = 420 ms traveling around the line of conduction block until it reached tissue that had recovered excitability (t = 620 ms). At time t = 710 ms the wavefront leaves the BZ and enters the LV myocardium. It propagates throughout the LV and returns to the BZ forming a reentrant circuit around the region of functional block. VT induction in the LV model can be fully appreciated in Supplemental Video 3.