title: Paroxysmal ventricular tachycardia of unknown etiology.
mesh_terms: D002648:Child; D004562:Electrocardiography; D004569:Electroencephalography; D006801:Humans; D008297:Male; D005082:Physical Exertion; D011433:Propranolol / Q000627:therapeutic use; D012075:Remission, Spontaneous; D013610:Tachycardia / Q000188:drug therapy
chemical_list: D011433:Propranolol