“…Independent predictors of SCD are (i) clinical diagnosis of atrial tachyarrhythmia and electrocardiogram (ECG) with one of the following features: any rhythm other than sinus rhythm, PR interval ≥ 240 ms, QRS duration ≥ 120 ms, second-or third-degree atrioventricular block [37,39], age, family history of SCD, and left bundle branch block [40,41].…”