title: Electrophysiological effect of verapamil and atropine on atrioventricular conduction.
mesh_terms: D000328:Adult; D000368:Aged; D001285:Atropine / Q000008:administration & dosage / Q000494:pharmacology*; D004594:Electrophysiology; D005260:Female; D006325:Heart Atria / Q000187:drug effects; D006329:Heart Conduction System / Q000187:drug effects* / Q000503:physiopathology; D006352:Heart Ventricles / Q000187:drug effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D014700:Verapamil / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D001285:Atropine; D014700:Verapamil