8. Different Mapping Systems and Approaches for Ablation of Atrial Fibrillation

PVA has been recently proved as an effective treatment to cure AF. This study establishes the feasibility and efficacy of NAVX® (Endocardial Solutions) in CPVA. Methods 30 consecutive patients with paroxysmal (20) or permanent (10) AF underwent ablation. Standard 4 mm irrigated tip catheters were used in all patients. Circumferential linear lesions were created around ipsilateral veins, using NAVX® guidance. Three ablation lines were added in all pts to prevent postablation reentry (LIPV to mitral valve, roof line, between left and right inferior PVOs). Ablation of IVC-TA isthmus was performed in all pts. Voltage map and activation sequence were then generated to validate the ostial isolation and isthmuses block. Results No procedural complications. Duration of left atrial procedure: 40+8 minutes (8+2 min mapping, 32+8 min ablation and postablation remapping). Total fluoroscopy time: 10 ± 8 min. At 6-months follow up, 17 (85 %) of patients with PAF and 8 (80%) of patients with CAF were free from atrial fibrillation symptomatically and on Holter monitoring. Conclusions AF Ablation can be performed both safely and effectively using the NAVX system.