The purpose of this retrospective data collection on re-ablations performed in both treatment arms (Cryo arm and Radiofrequency arm) of the FIRE AND ICE Trial is to gain insight into re-occurrence of atrial arrhythmias resulting in a re-ablation after a performed index ablation procedure. Data to be collected from subject charts include pulmonary vein anatomy, documented atrial arrhythmias prior to re-ablation, pulmonary vein reconnection, pulmonary vein ablation lesion gaps and gap location, ablation lesions performed during the re-ablation, procedure parameters of the RF or cryo catheter utilized during the re-ablation, and success of re-ablations performed.
Retrospective data collection on re-ablations performed within the FIRE AND ICE Trial.