title: [Electrophysiological effects of verapamil in patients with a short P-R and a normal QRS complex].
mesh_terms: D000328:Adult; D002036:Bundle of His / Q000187:drug effects; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000187:drug effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011690:Purkinje Fibers / Q000187:drug effects; D012849:Sinoatrial Node / Q000187:drug effects; D013997:Time Factors; D014700:Verapamil / Q000627:therapeutic use*
chemical_list: D014700:Verapamil
vernacular_title: Efectos electrofisiológicos del verapamil en pacientes con P-R corto y complejo QRS normal.