Data analysis
CF was recorded by the EnSite mapping system at approx. 10ms intervals during each episode of RF application and were exported from the mapping system for further analysis. RF time per lesion and mean CF per lesion were used to assess procedural efficiency. Stability in CF was evaluated in terms of CF variability within an individual lesion; standard deviation was calculated for the mean CF within each lesion (Figure 1). Inefficient contact lesions were defined as those whereby CF dropped below the minimum threshold of 5g for at least 10% of the total RF application time for the lesion 15,21. Analyses were performed for the overall procedure, as well as by correlating each lesion to individual PVs on the electroanatomic map.