在早产儿中细菌感染率很高,这是因为早产儿、特别是极低体重(LBW)新生儿其血清免疫球蛋白浓度很低,因此患败血症的危脸极大。临床上对LBW新生儿预防输注静注丙种球蛋白,使败血症的死亡率或重症患者显著减少。本文通过对健康LBW新生儿在出生后头两周,预防静脉输注标准静脉注射免疫球蛋白(IVIG)(Sandoglobulin,SG)或浓缩IgM的IVIG(Pentaglobin,PG)两种制品, The prevalence of bacterial infection in preterm infants is very high because of the low serum immunoglobulin concentration in preterm infants, especially in very low birth weight (LBW) neonates, so the risk of sepsis is extremely high. Clinically, LBG neonatal prophylaxis infusion of intravenous gamma globulin causes a significant reduction in sepsis mortality or critically ill patients. This article aims to prevent intravenous infusion of standard intravenous immunoglobulin (IVIG) (IVIG) (IVIG) or concentrated IgM IVIG (Pentaglobin, PG) in newborns with healthy LBW in the first two weeks of life,