title: Beta blockade in supraventricular arrhythmias.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D004562:Electrocardiography; D006801:Humans; D011217:Practolol / Q000627:therapeutic use*; D013610:Tachycardia / Q000188:drug therapy*; D013614:Tachycardia, Paroxysmal
chemical_list: D000319:Adrenergic beta-Antagonists; D011217:Practolol