title: Gastro-intestinal bleeding in patients with rheumatoid arthritis: the effects of azapropazone treatment.
abstract: A comparative study was carried out, using the Cr51 red blood cell labelling method, to assess the amount of gastro-intestinal blood loss in 20 rheumatoid arthritis patients taking either 600 mg. or 1200 mg. azapropazone daily. The results demonstrate that azapropazone does not produce greater than normal gastro-intestinal bleeding, that the volume of faecal blood loss is not dose-related, and there would not appear to be any correlation between blood loss and the occasional mild gastro-intestinal side-effects reported in a few patients. These results compared favourably with those obtained previously by the investigators in a similar group of patients taking 3 g. aspirin per day.
mesh_terms: D000328:Adult; D001032:Apazone / Q000009:adverse effects* / Q000627:therapeutic use; D001172:Arthritis, Rheumatoid / Q000097:blood / Q000188:drug therapy*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000139:chemically induced* / Q000175:diagnosis; D006801:Humans; D007501:Iron / Q000097:blood; D008297:Male; D011877:Radionuclide Imaging; D014227:Triazines / Q000009:adverse effects*
chemical_list: D014227:Triazines; D007501:Iron; D001032:Apazone