title: Sinus node re-entry: a mechanism for supraventricular tachycardia.
mesh_terms: D000368:Aged; D001285:Atropine / Q000494:pharmacology; D006328:Cardiac Catheterization; D004558:Electric Stimulation; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012849:Sinoatrial Node / Q000187:drug effects / Q000503:physiopathology*; D013610:Tachycardia / Q000503:physiopathology*
chemical_list: D001285:Atropine