Delayed onset anemia: Anemia that occurs at 2-12 weeks of age.Early onset anemia: Anemia that is present within the first 2 weeks of birth.There are 3 kinds of anemia that an infant with HDFN can have: Improperly monitored and untreated anemia can lead to heart failure and death in infants who are several weeks old. For this reason, follow-up in newborns whose cord blood confirms the presence of maternal antibodies is essential until the hemoglobin is increasing without a blood transfusion for at least two consecutive weeks, even in the absence of visible indications of anemia. Maternal alloantibodies (such as anti-E, anti-c, anti-M, anti-Jka, and others) which have crossed into the fetal circulation remain and can attach to the infant’s red blood cells for up to 12 weeks after birth. If the hemoglobin or hematocrit level is low, the child is considered to be anemic. Anemia is commonly evaluated by checking the child’s hemoglobin or hematocrit levels. Hematocrit at 0-6 months of age 37.4-55.9% (females) and 43.4-56.1% (males).Īnemia is an inadequate amount of red blood cells. Normal Lab Values: Hemoglobin at 0-6 months of age 12.7-18.3 g/dL (females) and 15.7-18.6 g/dL (males). Fast Facts Anemia: An inadequate amount of red blood cells.
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