Appendix: ACM: Arrhythmogenic Cardiomyopathy, AIVR: Accelerated Idioventricular Rhythm, ARVC: Arrhythmogenic Right Ventricular Cardiomyopathy, BP: Blood pressure, CRM: Cardiac Magnetic Resonance, ECG: Electrocardiography, ED: Emergency Department, EMT: Emergency Medical Technician, HR: Heart rate, ICD: Implantable cardioverter defibrillator, JUP: Junctional Plakoglobin, LAD: Left anterior descending, LBBB: Left bundle branch block, LGE: Late gadolinium enhancement, LV: Left Ventricle, PVC: premature ventricular contraction, RBBB: Right bundle branch block, RV: Right Ventricle, SCD: Sudden Cardiac Death