• Zuo Qing, Yan Luo, Shanshan Yan, Honquan Zhu, Peikai Huang, Zixuan Zhou, Hongyi Shen, Bifang Xie, Weigun He, Xiaoqing Liu, Yimin Li, and Yuanda Xu.
• Zhonghua Wei Zhong Bing Ji Jiu Yi Xue. 2016 May 1; 28 (5): 407-12.

ObjectiveTo investigate the possibility of improving the prognosis of patients with severe sepsis by different kinds of intravenous immunoglobulin (IVIG).MethodsPubMed database, EMBase, Cochrane clinical trial database, CNKI, and Wangfang database etc were retrieved. The search time was from database creation to September 2015,which included all prospective studies of the effectiveness of IVIG compared with non-IVIG in all adult patients with severe sepsis. Main end-point parameter was total mortality rate; secondary end-point parameters were short-term (＜ 7 days) mortality,28-day mortality, length of intensive care unit (ICU) and hospital stay, and mortality due to septic shock or multiple organ failure (MOF). RevMan 5.3 was used for Meta analysis.ResultsFinally,16 prospective studies including 12 randomized controlled trails (RCT) and 4 prospective cohort studies were enrolled, referred to 1 819 patients, 892 patients were in IVIG group, 927 patients receiving human albumin, placebo or blank control were in control group. Compared with the control group, IVIG could reduce the total mortality rate of patients with severe sepsis [relative risk (RR) =0.71,95％ confidence interval (95％CI) =0.57-0.87,P =0.001].After the high-risk research was eliminated, it was shown that the IVIG could reduce the total mortality rate in patients with severe sepsis (RR =0.80, 95％CI =0.65-0.98, P =0.03).But IVIG could not reduce the 28-day mortality rate (RR =0.60, 95％CI =0.35-1.04, P =0.07), short-term mortality rate (RR =1.06, 95％CI =0.76-1.46,P =0.74), the mortality rate of septic shock (RR =0.55, 95％CI =0.29-1.03, P =0.06) and the mortality rate of MOF (RR =0.91, 95％CI =0.63-1.33, P =0.64).In fact, the length of stay in ICU [weighted mean difference (WMD) =-0.02, 95％CI =-0.03-0.25, P =0.86] and the total length of stay in hospital (WMD =-2.34,95％CI =-7.05-2.37,P =0.33) were similar. In subgroup, the 28-day mortality rate of patients with severe sepsis in the IgM group (RR =0.50, 95％CI =0.25-1.01, P =0.05) was significantly lower than that of IgG group (RR =0.72, 95％CI =0.40-1.30, P =0.28).ConclusionsIVIG can reduce the total mortality rate of patients with severe sepsis. Compared with IgG, IgM-enriched IVIG has certain advantages in patients with severe sepsis, but cannot reduce the short-term mortality rate, mortality rate of septic shock and MOF, and also cannot shorten the length of ICU stay and the total length of hospital day.

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