RF = radiofrequency, DCCV = direct current cardioversion
Figure 1. Figure 1. Example ablation lesion set with excursion measures. A) For each ablation lesion, catheter position was sampled at 60Hz. The orange dotted trail represents all sampled positions during a single RF lesion. Mean and maximal catheter excursion were calculated for each ablation lesion, and the radius of each sphere represents the mean catheter excursion for that lesion.
B) All patients underwent pulmonary vein isolation and posterior wall isolation. Full lesion set is projected with the left atrium removed.
Figure 2. Measures of catheter stability in atrial-paced and ventricular-paced patients. There was no significant difference in mean excursion (A), maximal excursion (B), or standard deviation of contact force (C) between the two groups. Ventricular paced patients had significantly greater average contact force, compared to atrial paced patients (p = 0.02) (D).
Figure 3. One year arrhythmia free survival. There was no significant difference in one year arrhythmia free survival between the atrial-paced and ventricular-paced patients (78% vs 67%, p = 0.31).