Abstract
This systematic review and meta-analysis assessed the effects of early fortification (EF) versus late fortification (LF) of breast milk (BM) on growth of preterm infants. Randomized and quasi-randomized controlled trials (RCTs) dealing with the effects of EF versus LF on growth parameters, incidence of adverse events, and duration of hospital stay in preterm infants were included. Data were pooled using the RevMan 5.3 software. Quality of evidence for predefined outcomes was analyzed by GRADE. Available evidence (3 RCTs, 309 preterm infants) showed no statistically significant difference between EF and LF of BM for any of the growth parameters—weight (standardized mean difference (SMD) 0.13; 95% confidence interval (CI) − 0.09, 0.36); length (SMD 0.02; 95% CI − 0.20, 0.25); and head circumference (SMD − 0.10; 95% CI − 0.33, 0.12). Total parenteral nutrition days were similar. Duration of hospital stay was significantly higher with EF (MD 4.29; 95% CI 0.84, 7.75) with a trend of non-significant increase in feed intolerance and necrotizing enterocolitis (NEC).
Conclusion: Very low quality evidence did not find any significant difference in growth parameters of preterm infants in association with EF or LF of BM. A significant increase in hospital stay and non-significant increase in feed intolerance and NEC were associated with EF.
PROSPERO registration number: CRD42019139235
What is Known: • Fortification of breast milk with essential macro- and micronutrients is necessary for optimization of nutrition in preterm infants. • There is no consensus regarding the breast milk feeding volume at which fortification should be initiated. | |
What is New: • Very low quality evidence showed no significant difference between early and late fortification of breast milk on growth parameters of preterm infants. • Early fortification was associated with non-significant increase in feed intolerance and necrotizing enterocolitis and a significant increase in hospital stay. |
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Abbreviations
- BW:
-
Birth weight
- CI:
-
Confidence interval
- DHM:
-
Donor human milk
- EF:
-
Early fortification
- ESPGHAN:
-
European Society for Paediatric Gastroenterology, Hepatology, and Nutrition
- GA:
-
Gestational age
- GRADE:
-
Grading of Recommendations Assessment, Development and Evaluation
- HC:
-
Head circumference
- HMF:
-
Human milk fortifier
- IQR:
-
Interquartile range
- LF:
-
Late fortification
- LBW:
-
Low birth weight
- MD:
-
Mean difference
- MOM:
-
Mother’s own milk
- NEC:
-
Necrotizing enterocolitis
- PRISMA:
-
Preferred Reporting Items for Systematic Reviews and Meta-Analyses
- PROSPERO:
-
Prospective Register of Systematic Reviews
- RCT:
-
Randomized controlled trial
- RoB:
-
Risk of bias
- RR:
-
Risk ratio
- SD:
-
Standard deviation
- SMD:
-
Standardized mean differences
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Systematic review registration
The protocol for this systematic review was registered in the International Prospective Register of Systematic Reviews (PROSPERO) database (Registration number CRD42019139235).
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Prof Sriparna Basu, Dr. Jaya Upadhyay, Dr. Poonam Singh, and Dr. Manish Kumar conceptualized and planned this systematic review and meta-analysis and independently searched the literature. Dr. Jaya Upadhyay, Dr. Poonam Singh, and Dr. Manish Kumar individually collected the study details and outcome data using a predetermined form designed for this purpose. Disagreement was resolved by discussion with Prof Sriparna Basu. Risk of bias for each study was assessed individually. All authors approved the final manuscript as submitted and agreed to be accountable for all aspects of the work.
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Communicated by Daniele De Luca
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Electronic supplementary material
ESM 1
Web Figure 1 Change in growth parameters after exclusion of the study of Sullivan et al. (PNG 20 kb)
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Web Figure 2: Incidence of complications after exclusion of the study of Sullivan et al. (PNG 20 kb)
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Web Figure 3: Meta-regression for outcomes (PNG 150 kb)
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Web Figure 4: Funnel plots for outcomes (PNG 111 kb)
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Web Table 1: Electronic search strategy (DOCX 13 kb)
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Web Table 2 (DOCX 21 kb)
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Web Table 3: Meta-regression co-efficient; A - Weight/Weight change, B - Length/Length change, C - Head circumference/Head circumference change, D – Incidence of necrotizing enterocolitis, E - Incidence of sepsis (DOCX 13 kb)
ESM 8
Web Table 4: Publication bias by Egger’s regression intercept; A - Weight/Weight change, B - Length/Length change, C - Head circumference/Head circumference change, D - Necrotizing enterocolitis, E - Incidence of sepsis (DOCX 13 kb)
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Basu, S., Upadhyay, J., Singh, P. et al. Early versus late fortification of breast milk in preterm infants: a systematic review and meta-analysis. Eur J Pediatr 179, 1057–1068 (2020). https://doi.org/10.1007/s00431-020-03677-6
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DOI: https://doi.org/10.1007/s00431-020-03677-6