J-Shaped Association Between QTc Interval Duration and the Risk of Atrial Fibrillation

The aim of this study was to investigate whether the heart rate-corrected QT (QTc) interval on the electrocardiogram (ECG) is associated with the onset of atrial fibrillation (AF).Patients with hereditary short-QT or long-QT syndromes, representing the very extremes of the QT interval, both seem to have a high prevalence of AF.A total of 281,277 subjects were included, corresponding to one-third of the population of the greater region of...