In a study of 763 transfusions we have been impressed by the large number of conditions which were benefited by its use. We have classified these into four groups: (1) infections with secondary anemia, (2) nutritional disorders with and without infection, (3) diseases of the blood and (4) preoperative and postoperative conditions. The relative frequency of transfusions in each group is shown in table 1.
Of the total number of patients who received transfusions, 253, or 60 per cent, had infection with secondary anemia. The cases of athrepsia and anhydremia with intoxication complicated by infection have been included under nutritional disorders. Sidbury1 used transfusion for 298 patients with nutritional diseases, or 67 per cent of his total number. Only sixty-one patients, or 13 per cent of his total number, received transfusion for infection with secondary anemia. This variation is probably not due to a difference of opinion as to