Atrial ectopic activity associated with sinus bradycardia.
D000368:Aged; D001146:Arrhythmia, Sinus / Q000188:drug therapy / Q000503:physiopathology*; D001285:Atropine / Q000627:therapeutic use*; D001919:Bradycardia / Q000188:drug therapy / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria / Q000503:physiopathology*; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D012849:Sinoatrial Node / Q000503:physiopathology; D013268:Stimulation, Chemical; D014630:Vagus Nerve
D001285:Atropine