早产儿低丙种球蛋白血症是感染易发的主要因素。静脉滴注免疫球蛋白(ivlgG)对纠正IgG缺乏是有效的,并能预防和治疗早产儿的严重感染。一些研究表明,婴儿对ivIgG较易耐受。然而,成人低丙种球蛋白血症、血小板减少症、中性粒细胞减少症的体内外研究表明,ivIgG可明显降低自然杀伤细胞 Preterm children with low gammaglobulinemia is a major factor in susceptibility to infection. Intravenous immunoglobulin (ivlgG) is effective in correcting IgG deficiency and can prevent and treat severe infections in premature infants. Some studies show that infants are more tolerant to ivIgG. However, in vivo and in vitro studies in adults with hypogammaglobulinemia, thrombocytopenia, and neutropenia show that ivIgG can significantly reduce natural killer cells