Key Points: Prophylactic transfusion in pregnant women with SCD may reduce maternal mortality, vaso-occlusive pain events, and pulmonary complications. Prophylactic transfusion in pregnant women with SCD may similarly reduce perinatal mortality, neonatal death, and preterm birth.

Treatment options for immune thrombocytopenia (ITP) in pregnancy are limited, and evidence to guide management decisions is lacking. This retrospective study of singleton pregnancies from 2 tertiary centers compared the effectiveness of intravenous immunoglobulin (IVIg) and corticosteroids in treatment of ITP. Data from 195 women who had 235 pregnancies were reviewed. Treatment was not required in 137 pregnancies (58%). Of the remaining 98 pregnancies in 91 women, 47 (48%) were treated with IVIg and 51 were treated with corticosteroids as the initial intervention. Mean maternal platelet count at birth did not differ between groups (IVIg 69 × 10⁹/L vs corticosteroids 77 × 10⁹/L; P = .71) nor did the proportion of mothers who achieved a platelet count response (IVIg 38% vs corticosteroids 39%; P = .85). There were no fatal or severe maternal, fetal, or neonatal hemorrhages. Of 203 neonates in whom platelet counts were available, 56 (28%) had a birth platelet count <150 × 10⁹/L and 18 (9%) had platelet counts <50 × 10⁹/L. Nadir platelet counts for most affected neonates occurred at birth, although for some neonates, nadir platelet counts occurred up to 6 days postnatally. Intracranial hemorrhage was noted in 2 neonates (nadir platelet counts were 135 and 18 × 10⁹/L). There were no neonatal deaths. The majority of pregnant women with a history of ITP did not require treatment, and neonatal outcomes were comparable for mothers who received IVIg or corticosteroids for treatment of maternal ITP. Key Points Maternal platelet count response was not different for IVIg and corticosteroids in this retrospective study of pregnant women with ITP. Neonatal outcomes were overall favorable and similar after treatment of maternal ITP with IVIg or corticosteroids.