Atrial Fibrillation Cycle-Length (AF-CL) Inside the Pulmonary Veins Predicts Paroxysmal AF Ablation Success- the INDUCE-AF Study.

A novel method to measure atrial fibrillation cycle length (AF-CL) was recently described, based on the average of 10 consecutive signals (FARS10). FARS10 accurately identified pulmonary vein isolation (PVI)-responders among patients with persistent AF. Whether this method is applicable to patients with paroxysmal AF is unknown. The aim of this study is to evaluate the prognostic value of FARS10 measurements in patients with paroxysmal AF. We enrolled paroxysmal AF patients undergoing PVI in a prospective multicenter study. After AF induction with a standardized protocol, the AF-CL was measured using FARS-10 method. The primary endpoint was AF/AT-recurrence. One-hundred and four patients were included (61 ± 14 years, 25