Impatto Prognostico delle Aberrazioni di Conduttanza Atrio-Ventricolare in Cardiomiopatia Non Ischemica.

BACKGROUND: Late gadolinium enhancement (LGE) on cardiac magnetic resonance (CMR) improves prediction of ventricular arrhythmias (VA) in non-ischemic cardiomyopathy (NICM), but risk stratification within LGE+ cases remains challenging. Atrioventricular block (AVB) has been proposed as a predictor of VA, but contemporary data are scarce. OBJECTIVE: To assess the prognostic value of AVB in a contemporary cohort of patients with NICM studied with CMR. METHODS: Retrospective cohort study including 616 patients with NICM, with assessment of AVB at electrocardiogram (ECG) and LGE at CMR. The primary arrhythmic end point included any appropriate implantable cardioverter defibrillator therapy, sus