Hemolytic disease of the fetus and newborn (HDFN) is the development of anemia, hyperbilirubinemia, and finally hydrops fetalis in the fetus when antibodies to antigens on the surface of erythrocytes are transferred from the placenta to the fetus. The most common cause is D-HDFN. K (KEL1) from the Kell blood group system is the most potent immunogenic antigen after D among all blood group antigens. K-HDFN occurs in 0.1-0.3% of pregnant women. It accounts for 10% of cases of antibody-mediated severe fetal anemia. We present a successful management of Kell alloimmunization in a pregnant woman who had 3 times pregnancy loss with hydrops fetalis due to K-HDFN and who was proven to have K-HDFN in the postnatal period in her last pregnancy.
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http://dx.doi.org/10.1155/2024/1929147 | DOI Listing |
BMC Pregnancy Childbirth
December 2024
Immunology LATAM, Janssen, Mendoza, Buenos Aires, CP (1428), 1259, Argentina.
Background: Hemolytic disease of the fetus and newborn (HDFN) is a condition due to maternal blood group antibodies targeting antigens in fetal red blood cells, with significant prenatal/perinatal morbidity and mortality. Severe HDFN cases are often associated with alloimmunization against Rhesus D (RhD) or Kell antigens. Information about HDFN epidemiology and treatment in Latin American countries is limited.
View Article and Find Full Text PDFBackground: The ABO, Rh, and Kell blood groups are the most immunogenic and clinically important blood antigens. These antigens can trigger strong immune responses after blood transfusions, leading to alloimmunization and post-hemolytic transfusion reactions. The aim of this study was to determine prevalence of ABO, Rh, and Kell blood group antigens at the Al-Qurayyat Regional Laboratory and Blood Bank Center, Al-Qurayyat region, Saudi Arabia.
View Article and Find Full Text PDFAJOG Glob Rep
November 2024
Department of Emergency, Maternity and Neonatology Center of Tunis, University of Tunis El Manar Faculty of Medicine of Tunis, Tunis, Tunisia (Achour).
Congenital portosystemic shunt is a rare condition in which communications between the systemic venous circulation and the portal veins drain blood directly into the systemic circulation. Diagnosis may occur from the prenatal period to adulthood. Nevertheless, diagnosing and treating a congenital portosystemic shunt, particularly in the perinatal stage, remain challenging, as multiple complications can occur.
View Article and Find Full Text PDFTransfus Apher Sci
December 2024
Division of Hematology-Oncology, Department of Medicine, St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON M5B 1W8, Canada; Department of Laboratory Medicine, St. Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, M5B 1W8 Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Cir, Toronto, ON, M5S 1A8, Canada. Electronic address:
Immunohematology
September 2024
1Hemocentro Unicamp, Campinas, São Paulo, Brazil.
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