title: Hypomagnesemia and refractory cardiac arrhythmia in a nondigitalized patient.
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000209:etiology*; D003677:Deficiency Diseases / Q000150:complications; D005260:Female; D006801:Humans; D008274:Magnesium / Q000097:blood* / Q000627:therapeutic use; D008286:Malabsorption Syndromes / Q000150:complications
chemical_list: D008274:Magnesium