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. 2017 Mar 27;4(1):e000593. doi: 10.1136/openhrt-2017-000593

Figure 1.

Figure 1

Hypothesis: When the reconduction site (gap) arises on the extensive encircling ablation line associated with the reconnection circuit from the opposite site trigger source (indicated by ★), penetrating the interpulmonary isthmus line to the reconduction site, AF is induced through this circuit (A). The interpulmonary isthmus line ablation can block this circuit, resulting in AF recurrence prevention (B). However, we can also hypothesise conversely that the reconnection circuit occurs between the trigger source and gap in the short circuit, (C) and the interpulmonary isthmus line ablation cannot block this circuit in this case (D). AF, atrial fibrillation; PV, pulmonary vein.