title: POSTEXTRASYSTOLIC ALTERNANS OF THE U WAVE DU TO HYPOKALEMIA.
mesh_terms: D001145:Arrhythmias, Cardiac; D053840:Brugada Syndrome; D005117:Cardiac Complexes, Premature; D000075224:Cardiac Conduction System Disease; D004562:Electrocardiography; D005936:Glucans; D006329:Heart Conduction System; D006801:Humans; D007008:Hypokalemia
chemical_list: D005936:Glucans; C439358:alternan
keywords: ELECTROCARDIOGRAPHY; EXTRASYSTOLE; HYPOKALEMIA