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Figure 2 Transition from VF to VT by attaching a RWF to the obstacle and PM insertion. The numbers above the snapshots indicate time after the beginning of data acquisition. Panels A–I show activation during VF (panels A and B) and the transition to VT (panels C–I). Panels J and K show a schematic representation: wavefronts marked as an asterisk and a diamond activate the obstacle’s boundaries. Later on, a wavefront marked with a circle attached to it. Conduction time was longest when turning around the PM. Panel L shows the mapped tissue, with PM next to the obstacle. Note that activation maps are mirror-images of the mapped endocardial side. Therefore, panel J was shown in its mirror-image to match with the activation maps. Panel M shows local electrograms of selected channels (marked with numbers in panels J and K). Panel N shows the pECG, with the transition from VF to VT.
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