CF-Guided Ablation
In the CF group, FTI or AI targets were used, depending on the time
period of the ablation procedure. Real-time automated display of RF
applications (Visitag®, Biosense Webster) was used with predefined
settings of catheter stability (1.5 mm for 3 seconds) and minimum CF
(25% of the time > 3 gram). Each inter-lesion distance was
less than 6 mm. In patients who underwent FTI-guided ablation, operators
followed the EFFICAS I-based CF guidelines (minimum 400 gs
FTI).7 In AI-guided
ablation, RF was delivered until an AI of ≥ 400 at the posterior wall
and roof/bottom and ≥ 550 at the anterior wall was achieved, in
accordance with the CLOSE
protocol.8