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Rh disease (also known as rhesus isoimmunization, Rh (D) disease, or rhesus incompatibility, and blue baby disease) is a type of hemolytic disease of the fetus and newborn (HDFN). HDFN due to anti-D antibodies is the proper and currently used name for this disease as the Rh blood group system actually has more than 50 antigens and not only the ...
Thus, notwithstanding it is a misnomer, the term survives (e.g., rhesus blood group system and the obsolete terms rhesus factor, rhesus positive, and rhesus negative – all three of which actually refer specifically and only to the Rh D factor and are thus misleading when unmodified). Contemporary practice is to use "Rh" as a term of art ...
Individuals with a positive RhD status have RhD antigens expressed on the cell membrane of their red blood cells, whereas Rhesus D antigens are absent for individuals with a negative RhD status. Rhesus factor testing is usually performed on pregnant women to determine the RhD blood group of the mother and the fetus. By confirming the RhD status ...
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Rh disease (Rh D) ABO hemolytic disease of the newborn; Anti-Kell hemolytic disease of the newborn; Rhesus c hemolytic disease of the newborn; Rhesus E hemolytic disease of the newborn; Other blood group incompatibility (RhC, Rhe, Kid, Duffy, MN, P and others) Drug induced immune mediated hemolytic anemia Penicillin (high dose) Methyldopa
Blood is taken from the mother, and using PCR, can detect the K, C, c, D, and E alleles of fetal DNA. This blood test is non-invasive to the fetus and is an easy way of checking antigen status and risk of HDN. Testing has proven very accurate and is routinely done in the UK at the International Blood Group Reference Laboratory in Bristol. [17]
Rhesus e and rhesus C hemolytic disease of the newborn are rare. Anti-C and anti-c can both show a negative DAT but still have a severely affected infant. [20] [21] An indirect Coombs must also be run. Anti-Kell hemolytic disease of the newborn is most commonly caused by anti-K 1 antibodies, the second most common form of severe HDN.