Figure 5.

Wave-dynamic changes after filling the wave-breaking PVI-gaps, ablating the highest DF sites, and adding virtual flecainide. ECGs were obtained at the green ^* sites in the DF map, and the green arrows indicate the gaps in the PVI. (A) AF terminated after ablating the two gaps on the posterior wall of the LA. (B) AF terminated after ablating the high DF site (white areas indicated by black arrows). (C) AF converted to AT after adding virtual flecainide without additional ablation. PVI-gap indicates pulmonary vein isolation with gaps; PV, pulmonary vein; DF, dominant frequency; AF, atrial fibrillation; AT, atrial tachycardia; ECG, Electrocardiogram.