Utilizing preterm infant body composition assessments to guide neonatal nutrition
1Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut, USA.
Insights
Early nutrition impacts preterm infant body composition. Nutrient delivery is linked to increased fat-free mass, but more research is needed on long-term outcomes and practical assessment methods.
Area of Science:
- Neonatal nutrition
- Pediatric growth assessment
- Infant body composition
Background:
- Preterm infants exhibit distinct fat and muscle mass development compared to term infants.
- Early nutritional exposures may influence these developmental differences.
- Body composition analysis offers insights into infant growth quality.
Purpose of the Study:
- To review recent studies on early nutrition in preterm infants.
- To examine the relationship between nutrition and body composition outcomes.
- To understand factors influencing adiposity and lean mass development.
Main Methods:
- Review of recent scientific literature.
- Analysis of studies focusing on parenteral nutrition, formula supplementation, and human milk fortification.
- Assessment of body composition outcomes in the newborn period and beyond.
Main Results:
- Early nutrient delivery is associated with increased fat-free mass (lean mass) in preterm infants.
- Evidence suggests a link between nutritional interventions and improved body composition.
- Further research is required to connect body composition changes with long-term infant outcomes.
Conclusions:
- Body composition assessment is crucial for understanding preterm infant nutrition.
- Current validated tools have limitations for routine clinical use due to medical fragility.
- Development of feasible bedside assessment methods is needed for broader integration.
Purpose Of Review:
The use of body composition to assess the quality of infant growth may add valuable information to pediatric clinical care. Preterm infants have differences in their fat and muscle mass development compared with infants born at term, which may be related to their early nutritional exposures. This review focuses on recent studies examining early nutrition in preterm infants and related body composition outcomes in the newborn period and beyond.
Recent Findings:
Overall, the evidence shows that early nutrient delivery in parenteral nutrition and through formula supplementation or human milk fortification is associated with increased fat-free mass or lean mass in early life. However, future research is needed to fully understand the link between these body composition changes and longitudinal outcomes in preterm infants.
Summary:
Inclusion of body composition assessments in preterm infant nutrition research is critical to understand the factors associated with differences in adiposity and lean mass development in preterm infants. Medical fragility in preterm infants limits the routine use of body composition assessment tools which are currently validated, and additional studies are needed to thoroughly assess other methods which may be more feasible to integrate into bedside routine.
