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Published on: November 20, 2015
Growth of preterm born children
A M Euser1, C C de Wit, M J J Finken
1Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands.
Insights
Growth in very preterm or very low-birth-weight infants often involves initial failure followed by incomplete catch-up growth. This can lead to long-term differences in size and body composition, with potential metabolic consequences in adulthood.
Area of Science:
- Pediatrics
- Neonatology
- Human Growth and Development
Background:
- Focuses on the long-term growth trajectory of infants born very preterm or with very low birth weight.
- Highlights the challenges in analyzing growth data due to varying classification methods in existing literature.
Purpose of the Study:
- To review and describe the growth patterns of (very) preterm infants and (very) low-birth-weight infants from birth through adulthood.
- To synthesize current understanding of growth trajectories and their long-term implications.
Main Methods:
- Systematic review of literature on infant growth.
- Analysis of growth patterns based on available data, acknowledging definitional inconsistencies.
Main Results:
- Early postnatal growth failure is common, often followed by catch-up growth starting in infancy and potentially continuing into adolescence.
- Catch-up growth is typically incomplete, resulting in smaller stature and weight compared to term-born peers throughout life.
- Disproportionate height and weight gain can alter adult body composition, particularly in females.
Conclusions:
- Early catch-up growth benefits neurodevelopment but carries risks for adverse adult metabolic outcomes.
- The long-term health effects require further investigation as the first cohort of these infants reaches adulthood.
Background:
In this review, we describe the growth of (very) preterm infants or (very) low-birth-weight infants from birth until adulthood.
Methods:
A systematic analysis of growth of these infants is thwarted by different definitions (classification by gestational age or birth weight) used in the literature.
Results:
The early postnatal period of these individuals is almost invariably characterized by substantial growth failure. In the majority of preterm infants this is followed by a period of catch-up growth, which starts in early infancy and usually stops at 2-3 years of age, although in some cases it may continue into adolescence. Catch-up growth is usually incomplete, so that infants born preterm remain shorter and lighter than term-born peers during childhood, adolescence, and adulthood. Disproportionate catch-up growth in height and weight may lead to an altered body composition in adulthood, especially in females.
Conclusion:
Though early catch-up growth has shown to be beneficial for neurodevelopmental outcome, it is also associated with adverse metabolic consequences in adulthood. As the first generation of (very) preterm infants is now reaching young adulthood, future follow-up studies on these effects are warranted.
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