RF delivery
A summary of the total lesion count (N=270 lesions for each catheter) including steam-pops and char formation and parameters of RF-delivery is shown in Table 1. Average power was significantly higher with the TactiCathTM SE catheter compared to FlexAbilityTM SE (19W vs. 20W, p=0.004 at 20W setting; 27W vs. 29W, p<0.001 at 30W setting; 34.5W vs. 38W, p<0.001 at 40W setting), reflecting the lower temperature control rate (0% vs. 0% at 20W; 1.1% vs. 20%, p<0.001 at 30W; 3.3% vs. 46.7% at 40W). Steam-pops were observed more frequently with the TactiCathTM SE catheter at 30W (1.1% in FlexAbilityTM SE vs. 8.9% in TactiCathTM SE, p=0.034) and 40W (13.3% in FlexAbilityTM SE vs. 57.8% in TactiCathTM SE, p<0.001).