Efficacy and Safety of an Irrigated-Tip Catheter for the Ablation of Accessory Pathways Resistant to Conventional Radiofrequency Ablation

18 patients with 18 accessory pathways (APs) resistant to conventional radiofrequency catheter ablation (from an initial cohort of 301 consecutive patients with 314 APs).

Irrigated-tip catheter ablation using temperature control mode (target 50 degrees C), moderate saline flow rate (17 mL/min), and power limit of 50 W (outside coronary sinus) or 20 to 30 W (inside coronary sinus).

Prior failed conventional radiofrequency catheter ablation (intra-patient comparison).

Successful elimination of accessory pathway conduction.surrogate