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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 ...
Hemolytic disease of the newborn, also known as hemolytic disease of the fetus and newborn, HDN, HDFN, or erythroblastosis fetalis, [1] [2] is an alloimmune condition that develops in a fetus at or around birth, when the IgG molecules (one of the five main types of antibodies) produced by the mother pass through the placenta.
These are typically signs of hydrops fetalis. [5] After birth, the symptoms of the child are similar to that of incompatible blood transfusion in adults. The baby may have pale skin due to anaemia. The yellowing of the umbilical cord, skin and eyes, also known as jaundice, may arise within 24 to 36 hours of birth. [5]
Rh(D) status of an individual is normally described with a positive (+) or negative (−) suffix after the ABO type (e.g., someone who is A+ has the A antigen and Rh(D) antigen, whereas someone who is A− has the A antigen but lacks the Rh(D) antigen). The terms Rh factor, Rh positive, and Rh negative refer to the Rh(D
656.11 Rh incompatibility, delivered; 656.31 Fetal distress, delivered; 656.53 Small-for-dates, antepartum; 656.61 Large-for-dates, delivered; 657 Polyhydramnios; 658 Other problems associated with amniotic cavity and membranes 658.0 Oligohydramnios. 658.03 Oligohydramnios, antepartum; 658.1 Premature rupture of membrane, unspec.
Cell-free DNA can be used the determine the Rh antigen of the fetus when the mother is Rh negative. Blood is taken from the mother during the pregnancy, 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.
Blood compatibility testing is routinely performed before a blood transfusion.The full compatibility testing process involves ABO and RhD (Rh factor) typing; screening for antibodies against other blood group systems; and crossmatching, which involves testing the recipient's blood plasma against the donor's red blood cells as a final check for incompatibility.
An acute hemolytic transfusion reaction (AHTR), also called immediate hemolytic transfusion reaction, is a life-threatening reaction to receiving a blood transfusion.AHTRs occur within 24 hours of the transfusion and can be triggered by a few milliliters of blood.