title: Very wide QRS complexes.
mesh_terms: D000368:Aged; D000638:Amiodarone / Q000627:therapeutic use; D004562:Electrocardiography; D004630:Emergencies; D006801:Humans; D008297:Male; D012008:Recurrence; D013614:Tachycardia, Paroxysmal / Q000175:diagnosis* / Q000188:drug therapy
chemical_list: D000638:Amiodarone