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Characterization of syncope by implantable loop recorder. Details on the arrhythmic event are as follows: Bradyarrhythmias (n = 19, 59.3%): atrio-ventricular block (n = 4), Sinus arrest (n = 15). Atrial arrhythmias (n = 5, 15.7%): Atrial fibrillation (n = 5). Ventricular arrhythmias (n = 8, 25.0%): sustained ventricular tachycardia (n = 3), ventricular fibrillation or polymorphic ventricular tachyarrhythmias (n = 2), non-sustained ventricular tachyarrhythmias (n = 3)
