Dose-response relationship in the treatment of idiopathic thrombocytopenic purpura with intravenous immunoglobulin

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Abstract
The dose-response relationship in the intravenous immunoglobulin treatment of idiopathic thrombocytopenic purpura was studied in 20 adult patients in a multicenter prospective crossover trial. The rate of response increases from 3 out of 11 (27%) to 6 out of 10 treatment periods (60%) by raising the 7S-IgG dose given on 5 consecutive days from 164.50±24.55 to 359.65±58.62 mg/kg body weight. The onset and duration of response as well as the peak platelet count were found to be independent of the doses. A long-term benefit induced by intravenous immunoglobulin treatment could be achieved in 2 out of 14 patients with chronic idiopathic thrombocytopenic purpura.