Are probiotics effective in the prevention and treatment of necrotizing enterocolitis in preterm or low birth weight infants?
The Question
Are probiotics effective in the prevention and treatment of necrotizing enterocolitis in preterm or low birth weight infants?
Recommendation
There is some evidence that certain probiotic strains may reduce the risk of necrotizing enterocolitis (NEC) in preterm (<37 weeks gestation) and very preterm (<32 weeks gestation), as well as low birth weight (<2500 g) and very low birth weight (<1500 g) infants. Probiotics of the genuses Bifidobacterium, Lactobacillus, Streptococcus or a combination of the above have shown the most promise, while Sacchromyces, Bacillus and combinations including Sacchromyces have not been shown to be effective. These results should be interpreted with caution due to methodological flaws in the evidence base that may overestimate the treatment effect. The effect of probiotics on risk of NEC in extremely preterm (<28 weeks gestation) and extremely low birth weight (<1000 g) infants has been studied in a few trials, which found no clear effect. More research is necessary to elucidate this effect. There are safety concerns with the administration of probiotics to very preterm or very low birth weight infants, as they have reportedly caused bacteraemia or fungaemia in some instances. Differences in safety between probiotic genuses or strains have not been elucidated.
Grade of Evidence C
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