title: [Electrophysiological effects of anti-arrhythmic calcium-antagonistic drugs in patients with conduction disorders: preliminary observations on verapamil].
mesh_terms: D000368:Aged; D004341:Drug Evaluation; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000188:drug therapy*; D006329:Heart Conduction System / Q000187:drug effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D014700:Verapamil / Q000627:therapeutic use*
chemical_list: D014700:Verapamil
vernacular_title: Effetti elettrofisiologici dei farmaci anti-aritmici antagonisti del calcio in pazienti con disturbi della conduzione: osservazioni preliminari sul verapamil