title: The sick sinus syndrome.
mesh_terms: D001146:Arrhythmia, Sinus / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D001145:Arrhythmias, Cardiac / Q000150:complications; D001281:Atrial Fibrillation / Q000209:etiology; D001285:Atropine; D001919:Bradycardia / Q000209:etiology / Q000503:physiopathology; D003645:Death, Sudden; D006323:Heart Arrest / Q000209:etiology; D006325:Heart Atria / Q000503:physiopathology; D006327:Heart Block / Q000209:etiology; D006339:Heart Rate; D006801:Humans; D007545:Isoproterenol; D008991:Monitoring, Physiologic; D010138:Pacemaker, Artificial; D011379:Prognosis; D012849:Sinoatrial Node / Q000503:physiopathology; D013575:Syncope / Q000209:etiology; D013577:Syndrome; D014717:Vertigo / Q000209:etiology
chemical_list: D001285:Atropine; D007545:Isoproterenol