Spatial stability
Spatial stability was assessed by correlating the frequency of propagation patterns (LIA, LRA and FF) at each vertex of the chamber anatomy over 2 separate 30s recordings taken at baseline prior to any ablation. The value for the number of pattern occurrences were plotted for each vertex of the anatomy for each recording. A linear best fit line was plotted, and R2 calculated to assess the strength of the linear correlation between the two mapping segments. Stability of regions with the most repetitive patterns identified using the 30% threshold value for each 30s map were compared using Cohen’s kappa statistic.