围产儿贫血并不少见。其常见的原因为溶血及失血。其他如营养性贫血及先天性再生低下性贫血少见。溶血及失血均可发生于宫内、出生时或出生后。严重贫血其失血量约为患儿总血容量的5—10％,可引起流产、宫内窒息及出生时就有严重贫血而致失血性休克。本文仅介绍围产儿失血性贫血。一、新生儿血液学的正常值红细胞、血红蛋白及红细胞压积、从胎 Perinatal anemia is not uncommon. The common reason is hemolysis and blood loss. Others such as nutritional anemia and congenital hypothyroidism are rare. Hemolysis and blood loss can occur in the uterus, at birth or after birth. Severe anemia, its blood loss is about 5-10% of the children’s total blood volume, can cause miscarriage, intrauterine asphyxia and birth at the age of severe anemia and hemorrhagic shock. This article describes only perinatal hemorrhagic anemia. First, the normal neonatal hematology erythrocytes, hemoglobin and hematocrit, from the fetus