title: A comparative study of dextro-alprenolol, dextro-propranolol, and practolol in treatment of ventricular ectopic beats.
mesh_terms: D000083:Acetanilides / Q000627:therapeutic use*; D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use; D000605:Amino Alcohols / Q000627:therapeutic use*; D001145:Arrhythmias, Cardiac / Q000188:drug therapy*; D002908:Chronic Disease; D006801:Humans; D011433:Propranolol / Q000627:therapeutic use*; D013565:Sympatholytics / Q000627:therapeutic use*
chemical_list: D000083:Acetanilides; D000319:Adrenergic beta-Antagonists; D000605:Amino Alcohols; D013565:Sympatholytics; D011433:Propranolol