Intravenous immunoglobulin for suspected or proven infection in neonates.

backgroundNeonates are at higher risk of infection due to immuno-incompetence. Maternal transport of immunoglobulins to the fetus mainly occurs after 32 weeks' gestation, and endogenous synthesis begins several months after birth. Administration of intravenous immunoglobulin (IVIG) provides immunoglobulin G (IgG) that can bind to cell surface receptors, provide opsonic activity, activate complement, promote antibody-dependent cytotoxicity and improve neutrophilic chemo-luminescence. Theoretically, infectious morbidity and mortality could be reduced by the administration of IVIG.

objectivesTo assess the effects of IVIG on mortality and morbidity caused by suspected or proven infection at study entry in neonates. To assess in a subgroup analysis the effects of IgM-enriched IVIG on mortality from suspected infection. SEARCH

methodsFor this update, MEDLINE, EMBASE, The Cochrane Library, CINAHL, trial registries, Web of Science, reference lists of identified studies, meta-analyses and personal files were searched in 2013. No language restrictions were applied. SELECTION CRITERIA: Randomised or quasi-randomised controlled trials involving newborn infants (< 28 days old); IVIG for treatment of suspected or proven bacterial or fungal infection compared with placebo or no intervention; and where one of the following outcomes was reported, mortality, length of hospital stay or psychomotor development at follow-up. DATA COLLECTION AND ANALYSIS: Statistical analyses included typical risk ratio (RR), risk difference (RD), weighted mean difference (WMD), number needed to treat for an additional beneficial outcome (NNTB) or an additional harmful outcome (NNTH), all with 95% confidence intervals (CIs), and the I MAIN

resultsThe updated search identified one published study that was previously ongoing. A total of 9 studies evaluating 3973 infants were included in this review. Mortality during hospital stay in infants with clinically suspected infection was not significantly different after IVIG treatment (9 studies (n = 2527); typical RR 0.95, 95% CI 0.80 to 1.13; typical RD -0.01, 95% CI - 0.04 to 0.02; I AUTHORS'

conclusionsThe undisputable results of the INIS trial, which enrolled 3493 infants, and our meta-analyses (n = 3973) showed no reduction in mortality during hospital stay, or death or major disability at two years of age in infants with suspected or proven infection. Although based on a small sample size (n = 266), this update provides additional evidence that IgM-enriched IVIG does not significantly reduce mortality during hospital stay in infants with suspected infection. Routine administration of IVIG or IgM-enriched IVIG to prevent mortality in infants with suspected or proven neonatal infection is not recommended. No further research is recommended.