Cochrane · systematic review · CD012519

Maternal probiotic supplementation for prevention of morbidity and mortality in preterm infants

Grev, J, Berg, M, Soll, R · Cochrane Database of Systematic Reviews · 2018 · Cochrane Library

NeonatalAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
17
current version
GRADE rated
13
No studies
4
Included studies
NR
No studies 4 · 23.5%Ungraded 0 · 0%Very low 2 · 11.8%Low 11 · 64.7%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Probiotics administered to pregnant women at risk of preterm birth compared to placebo or no intervention for prevention of morbidity and mortality in preterm infants

Population: prevention of morbidity and mortality in preterm infants
10 questions
OutcomeEffectEvidenceStatus / GRADE
Preterm birth < 37 weeks' gestation
Probiotics administered to pregnant women at risk of preterm birth vs placebo or no intervention
RR 0.92 [0.32, 2.67]4 studies · 518 participantsLow
Downgraded: risk of bias, indirectness
Preterm birth < 34 weeks' gestation
Probiotics administered to pregnant women at risk of preterm birth vs placebo or no intervention
no estimate extracted2 studies · 287 participantsVery low
Downgraded: risk of bias, indirectness
Gestational age at birth (weeks)
Probiotics administered to pregnant women at risk of preterm birth vs placebo or no intervention
no estimate extracted2 studies · 207 participantsLow
Downgraded: risk of bias, indirectness
Death
Probiotics administered to pregnant women at risk of preterm birth vs placebo or no intervention
no estimate extracted2 studies · 298 participantsLow
Downgraded: risk of bias, imprecision, indirectness
Miscarriage/stillbirth
Probiotics administered to pregnant women at risk of preterm birth vs placebo or no intervention
RR 0.79 [0.2, 3.14]2 studies · 320 participantsLow
Downgraded: risk of bias, imprecision, indirectness
Neonatal sepsis ≤ 3 days
Probiotics administered to pregnant women at risk of preterm birth vs placebo or no intervention
no estimate extracted1 study · 162 participantsVery low
Downgraded: risk of bias, indirectness
Severe necrotizing enterocolitis (NEC) (Bell stage II or more)
Probiotics administered to pregnant women at risk of preterm birth vs placebo or no intervention
no estimate extractedNRNo studies
Death or severe NEC
Probiotics administered to pregnant women at risk of preterm birth vs placebo or no intervention
no estimate extractedNRNo studies
Late‐onset sepsis
Probiotics administered to pregnant women at risk of preterm birth vs placebo or no intervention
no estimate extractedNRNo studies
Culture‐proven sepsis with supplemented probiotic
Probiotics administered to pregnant women at risk of preterm birth vs placebo or no intervention
no estimate extractedNRNo studies

Probiotics administered exclusively after birth in mothers of preterm infants compared to maternal placebo or no intervention for prevention of morbidity and mortality in preterm infants

Population: prevention of morbidity and mortality in preterm infants
7 questions
OutcomeEffectEvidenceStatus / GRADE
Any necrotizing Enterocolitis (NEC)
Probiotics administered exclusively after birth in mothers of preterm infants vs maternal placebo or no intervention
RR 0.44 [0.13, 1.46]1 study · 58 participantsLow
Downgraded: imprecision
Death prior to hospital discharge
Probiotics administered exclusively after birth in mothers of preterm infants vs maternal placebo or no intervention
RR 0.66 [0.06, 6.88]1 study · 58 participantsLow
Downgraded: imprecision
Death or NEC
Probiotics administered exclusively after birth in mothers of preterm infants vs maternal placebo or no intervention
RR 0.53 [0.19, 1.49]1 study · 58 participantsLow
Downgraded: imprecision
Surgery for NEC
Probiotics administered exclusively after birth in mothers of preterm infants vs maternal placebo or no intervention
RR 0.15 [0.01, 2.58]1 study · 58 participantsLow
Downgraded: imprecision
Neonatal sepsis
Probiotics administered exclusively after birth in mothers of preterm infants vs maternal placebo or no intervention
RR 1.32 [0.48, 3.61]1 study · 58 participantsLow
Downgraded: imprecision
Culture‐proven sepsis with probiotic organism
Probiotics administered exclusively after birth in mothers of preterm infants vs maternal placebo or no intervention
no estimate extracted1 study · 58 participantsLow
Downgraded: imprecision
Feeding with more than 50% breast milk (days)
Probiotics administered exclusively after birth in mothers of preterm infants vs maternal placebo or no intervention
no estimate extracted1 study · 58 participantsLow
Downgraded: imprecision