Formes sévères d’allo-immunisation néonatale dans le système ABO : à propos de 8 cas

Abstract

Hemolytic disease of the newborn is a clinical situation in which fetal red blood cells are destroyed by maternal IgG-type alloantibodies directed against paternal antigens. Unlike fetal-maternal alloimmunization in the RHD system, which leads to severe hemolytic disease, fetal-maternal alloimmunization in the ABO system generally results in benign hemolysis. We present a retrospective study of eight cases of severe ABO, collected over a 5-year period from January 2016 to December 2022. All the mothers were O+ grouped with negative RAI. Severity criteria were early jaundice, positive Coombs test and severe hemolysis with profound anemia.