Atrial tachycardia secondary to sino-atrial node reentry.
D000368:Aged; D001285:Atropine / Q000494:pharmacology; D002036:Bundle of His / Q000187:drug effects / Q000503:physiopathology; D006328:Cardiac Catheterization; D004562:Electrocardiography; D004594:Electrophysiology; D005471:Fluoroscopy; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D012849:Sinoatrial Node / Q000187:drug effects / Q000503:physiopathology*; D013268:Stimulation, Chemical; D013610:Tachycardia / Q000503:physiopathology*
D001285:Atropine