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Prevention of Maternal Rh D Alloimmunization: A Comparative Review of Guidelines.
Obstet Gynecol Surv
December 2024
Associate Professor.
Importance: Rhesus alloimmunization refers to the sensitization of an Rh D-negative mother after exposure to D-positive fetal red blood cells, which can lead to significant fetal and neonatal morbidity and mortality.
Objective: The aim of this study was to review and compare the most recently published international guidelines on the prevention of maternal alloimmunization.
Evidence Acquisition: A comparative review of guidelines from the American College of Obstetricians and Gynecologists, the British Committee for Standards in Hematology, the International Federation of Gynecology and Obstetrics, the Royal Australian and New Zealand College of Obstetricians and Gynecologists, and the Society of Obstetricians and Gynecologists of Canada regarding the prevention of maternal Rh D alloimmunization was conducted.
Rho(D) immune globulin shortage and fetal Rh(D) screening with cell-free DNA.
Curr Opin Obstet Gynecol
December 2024
University of North Carolina School of Medicine, Division of Maternal Fetal Medicine, Department of Obstetrics & Gynecology, Chapel Hill, North Carolina, USA.
Purpose Of Review: Despite the availability of Rh(D) immune globulin (RhIg) to prevent alloimmunization in Rh(D)-negative pregnant patients, anti-Rh(D) alloimmunization remains a prevalent cause of hemolytic disease of the fetus and newborn (HDFN). Recent RhIg shortages have caused clinicians and professional societies to identify methods to prioritize RhIg administration. New cell-free DNA (cfDNA) tests to predict fetal red blood cell antigen genotypes have been proposed as an option to prioritize the administration of RhIg to Rh(D)-negative pregnant people.
View Article and Find Full Text PDF[Study on the Production of Anti-D and Anti-E Mixed Antibodies by Alloimmunization in RhD Variant Type33 Recipients].
Zhongguo Shi Yan Xue Ye Xue Za Zhi
December 2024
Blood Group Reference Laboratory, Ningxia Blood Center, Yinchuan 750000, Ningxia Hui Autonomous Region, China.
Objective: To investigate the cause of the production of anti-D and anti-E mixed antibody in an RhD positive patient.
Methods: The ABO/Rh blood group typing and irregular antibody specificity were identified by conventional serological methods, the gene exon 1-10 and heterozygous analysis were performed by sequence-specific primer polymerase chain reaction (PCR-SSP), and the whole exon sequence was analyzed by first-generation sequencing.
Results: The patient's Rh blood group was weak D Type33, with the allele was , the patients was found to be heterozygous, with an Rh typing of Ccee, and the patient had developed anti-D combined with anti-E mixed antibodies.
Anti-G evaluations in D- pregnant women determine the need for Rh immune globulin prophylaxis: report of two illustrative cases.
Immunohematology
December 2024
Department of Pathology, University of Wisconsin Hospital, Madison, WI.
Distinguishing anti-D, anti- C, and anti-G specificities is particularly essential in antenatal cases to ensure proper patient management. The clinical management as well as Rh immune globulin (RhIG) prophylaxis depend on the accurate identification of these distinct antibodies. D- pregnant women with anti-G, but without anti-D, in their serum need RhIG prophylaxis at 28 weeks of gestation, at delivery if the infant is D+, and when clinically indicated to prevent the formation of anti-D and potential hemolytic disease of the fetus and newborn (HDFN).
View Article and Find Full Text PDFWeak and partial D phenotyping: a comparison study between molecular and serologic results.
Immunohematology
December 2024
Versiti, Milwaukee, WI.
Variant D antigens can cause variable serologic results when typing with Anti-D reagents. There is limited information regarding the ability of Anti-D reagents to differentiate between D variants defined by genotyping. This study was performed to determine if a panel of 20 U.
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