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Figure 2 Examples of termination of atrial fibrillation during radiofrequency (RF) application in two patients (A and B) with permanent atrial fibrillation. Both patients had failure of electric cardioversion. Note that the atrial fibrillation termination occurred in both patients during right atrial ablation (septal line) after progressive prolongation of cycle length of FF intervals. ABL D = distal ablation catheter; ABL P = proximal ablation catheter; CS = coronary sinus; DCS = distal coronary sinus; PCS = proximal coronary sinus; RVA = right ventricular apex.
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