aClass of recommendation.
bLevel of evidence.
ARVC = arrhythmogenic right ventricular cardiomyopathy; BBB = bundle branch block; CSNRT = corrected sinus node recovery time; DCM = dilated cardiomyopathy; EPS = electrophysiological study; ICD = implantable cardioverter defibrillator; HV = His-ventricle; SVT = supraventricular tachycardia; VT = ventricular tachycardia.