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  • Title: Personalized treatment with immunoadsorption and intravenous immunoglobulin in a case of severe Rh alloimmunization during pregnancy unresponsive to plasma - exchange.
    Author: Colpo A, Tison T, Gervasi MT, Vio C, Vicarioto M, De Silvestro G, Marson P.
    Journal: Transfus Apher Sci; 2017 Jun; 56(3):480-483. PubMed ID: 28648573.
    Abstract:
    INTRODUCTION: Despite prophylaxis, a small proportion of RhD-negative women may develop anti-D antibodies after a sensitizing event occurring during pregnancy or delivery of a D-positive baby. Intrauterine transfusion (IUT) is the treatment of choice in case of fetal anemia, but it cannot be performed early during pregnancy. Combined treatment with therapeutic plasma-exchange (TPE) and intravenous immunoglobulin (IVIG) can avoid or delay IUT. Immunoadsorption (IA) could represent a more effective treatment in selected cases. CASE REPORT: We report a D-negative female with a history of induced abortion and hydrops fetalis, referred at 8 weeks of gestation with a high anti-D titer. Despite implementing a TPE-IVIG protocol, the patient experienced a spontaneous abortion. At the beginning of her fourth pregnancy, only after a partially effective intensive TPE course, cycles of IA-IVIG were performed. Despite a suboptimal response on the anti-D titer, Doppler ultrasonographic measurements of the fetal middle cerebral artery peak systolic velocity first showed evidence of anemia at 30 weeks of gestation and a IUT was required. After the IUT, anemia persisted with a subsequent dramatic rise in titer, requiring an emergent cesarean section. The infant subsequently underwent successful treatment with IVIG, phototherapy and exchange transfusion and was discharged 7 weeks later without neurological deficits. DISCUSSION: The treatment of high titer anti-D antibodies during pregnancy may require a multidisciplinary approach with utilization of different apheresis strategies in order to have a successful pregnancy outcome.
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