title: [Comparison of the effectiveness of verapamil and practolol in the treatment of arrhythmia].
mesh_terms: D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000188:drug therapy*; D006801:Humans; D008875:Middle Aged; D011217:Practolol / Q000627:therapeutic use*; D014700:Verapamil / Q000627:therapeutic use*
chemical_list: D014700:Verapamil; D011217:Practolol
vernacular_title: Porównanie skuteczności werapamilu i praktololu w leczeniu zaburzeń rytmu serca.