title: Supraventricular arrhythmia in the elderly.
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000628:therapy; D004562:Electrocardiography; D006352:Heart Ventricles; D006801:Humans; D008722:Methods; D010138:Pacemaker, Artificial