title: Verapamil effects on retrograde dual A-V conduction.
mesh_terms: D000328:Adult; D001283:Atrioventricular Node / Q000187:drug effects*; D002037:Bundle-Branch Block / Q000139:chemically induced*; D004562:Electrocardiography; D006329:Heart Conduction System / Q000187:drug effects*; D006801:Humans; D008297:Male; D013614:Tachycardia, Paroxysmal / Q000503:physiopathology; D014700:Verapamil / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D014700:Verapamil