RecruitingDevice studyRepeatable Evaluation of Functional Intra-procedural Signals for Effect in Pulsed Field Ablation REFINE-PFAThe study is a prospective, exploratory observational study with the ECGenius® System and the PFAnalyzer software module in PFA cases using the FaraPulse PFA system. The cohort will be patients with paroxysmal or persistent atrial fibrillation (AF) who undergo PVI using this system.