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  • Title: Intravenous immunoglobulin G and anti-D as therapeutic interventions in immune thrombocytopenic purpura.
    Author: Blanchette V, Carcao M.
    Journal: Transfus Sci; 1998 Sep; 19(3):279-88. PubMed ID: 10351140.
    Abstract:
    Immune thrombocytopenic purpura (ITP) is a disorder caused by accelerated destruction of antibody-coated platelets in the reticuloendothelial system (RES), especially the spleen. Inhibition of RES function following intravenous administration of high-dose immunoglobulin G (IVIG) or intravenous anti-D leads to rapid, albeit usually temporary, reversal of thrombocytopenia in the majority of children and adults with ITP. In emergency situations high-dose IVIG is preferred over anti-D because of the more rapid rate of platelet response; for maintenance therapy in Rh positive ITP patients (e.g. children with chronic ITP pre-splenectomy) anti-D is preferred because of its comparable efficacy to IVIG plus ease of administration and lower cost. In children with typical acute ITP and platelet counts < 20 x 10(9)/L IVIG is preferred over anti-D; however other approaches in this patient cohort should be considered before high-dose IVIG, specifically careful observation alone with therapy given only to children with clinically significant haemorrhage or short course oral prednisone at a starting dose of approximately 4 mg/kg/day. Studies are required to define the short and longer term effects of both IVIG and anti-D on the immune system in order to plan more rational use of these immunomodulatory therapies in this model autoimmune disorder.
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