新生儿的血液正常值随日龄而有差异,但均高于其他年龄组(见附表)。一般认为初生二周内的新生儿,静脉血的血红蛋白低于13克/分升或毛细血管的血红蛋白低于14.5克/分升者,可以诊断为新生儿贫血。生后一周内新生儿贫血主要原因为溶血及失血。现将生后一周内新生儿失血性贫血的分类、临床表现及诊治的有关问题简介于下。一、分类 (一)分娩前或分娩时失血(胎内或产程中失血) 1.胎儿-母亲间失血 (1)自发性:妊娠后期或分娩过程中,常有胎儿 Neonatal blood normal values ​​vary with age, but were higher than the other age groups (see table). It is generally believed that newborns within the first two weeks of life, venous hemoglobin less than 13 g / dL or capillary hemoglobin less than 14.5 g / dL, can be diagnosed as neonatal anemia. Neonatal anemia within one week after birth the main reason for hemolysis and blood loss. Now within a week after birth, hemorrhagic anemia neonatal classification, clinical presentation and diagnosis and treatment of related issues below. First, the classification (a) before delivery or delivery of blood loss (intra-labor or labor loss of blood) 1. Fetal - loss of blood between mothers (1) Spontaneously: the late pregnancy or childbirth, the fetus