title: Romano-Ward prolonged QT syndrome with intermittent T wave alternans and atrioventricular block.
mesh_terms: D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000503:physiopathology*; D006331:Heart Diseases / Q000175:diagnosis / Q000188:drug therapy / Q000503:physiopathology*; D006801:Humans; D010672:Phenytoin / Q000627:therapeutic use; D013577:Syndrome
chemical_list: D010672:Phenytoin