Hunuk B, et al. - Among 434 patients (305 males, 58 ± 11 years) who underwent radiofrequency (RF) pulmonary vein isolation (PVI) for paroxysmal atrial fibrillation (AF) ablation, researchers assessed the prevalence of early repolarization patterns (ERP) as well as its relation to AF recurrence. Cases with structural heart disease, ongoing use of Class I/III antiarrhythmics, complete-bundle-branch-block were excluded from the study. Recurrence was defined as documented episodes of AF lasting ≥30 seconds. In AF population vs the general population, a higher prevalence of ERPs was found. In middle-aged patients, AF recurrence in the follow-up following RF-PVI might be predicted by infero-lateral ERP in baseline ECG.