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).