Keywords: AHA Scientific Statements; AV block; Holter monitoring; ablation; ambulatory electrocardiography; aminophylline; atrioventricular block; atropine; beta-adrenergic agonist; bradyarrhythmia; bradycardia; bundle branch block; cardiac pacing; cardiac resynchronization therapy; cardiac sinus pause; cardiac surgery; congenital heart disease; digoxin antibodies Fab fragments; electrocardiogram; glucagon; heart block; intraoperative; isoproterenol; lamin A-C; left bundle branch block; muscular dystrophies; myocardial infarction; myotonic dystrophy; pacemaker; pacing; preoperative; quality of life; right bundle branch block; sarcoidosis; shared decision-making; sick sinus syndrome; sinus arrest; sinus bradycardia syndrome; sinus node dysfunction; spinal cord injuries; syncope; theophylline; transcatheter aortic valve replacement.