title: Sick sinus syndrome.
mesh_terms: D000328:Adult; D000368:Aged; D001146:Arrhythmia, Sinus / Q000188:drug therapy / Q000628:therapy*; D001919:Bradycardia / Q000188:drug therapy / Q000628:therapy*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D013575:Syncope / Q000628:therapy; D013577:Syndrome; D013614:Tachycardia, Paroxysmal / Q000517:prevention & control*