pediatrics
Perinatal Anemia
Introduction
 2 standard deviations below the mean for age. Some authorities also consider a relative anemia to exist when a hemoglobin or hematocrit above that cutoff point is insufficient to meet tissue oxygen demand. Anemia and Perinatal Polycythemia and Hyperviscosity Syndrome are the most common hematologic disorders diagnosed at birth. ( See also Both hemoglobin and hematocrit change rapidly as a neonate matures, so lower limits of normal also change ( ). Variables such as 