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Updated: Mar 19, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Total energy intake accounts for postnatal anthropometric growth in moderately/late preterm infants
Hideaki Yagasaki1, Yasushi Murakami1, Tetsuo Ohyama1
1a Department of Pediatrics , Faculty of Medicine, University of Yamanashi , Yamanashi , Japan.
Insights
Total energy intake (TEI) effectively assesses nutritional needs in preterm infants. Higher TEI correlated with better weight gain and less weight loss, indicating its value in monitoring infant growth.
Area of Science:
- Neonatal Nutrition
- Pediatric Growth Assessment
- Infant Metabolism
Background:
- Preterm infants, including moderately preterm (MP) and late preterm (LP) infants, face elevated risks of mortality and developmental issues.
- Accurate nutritional assessment is crucial for optimizing outcomes in these vulnerable populations.
Purpose of the Study:
- To introduce and evaluate Total Energy Intake (TEI) as a novel metric for assessing nutritional status in preterm infants.
- To determine the correlation between TEI and anthropometric changes in preterm infants.
Main Methods:
- Fifty-two preterm infants were categorized into MP, LP/appropriate for gestational age (LP/AGA), and LP/small for gestational age (LP/SGA) groups.
- All infants received standardized nutrient therapy.
- Total energy intake (TEI) was calculated by summing kilocalories from all nutrient sources at 14 and 28 days post-birth.
Main Results:
- TEI values at 28 days were 2822.1 ± 162.1 kcal/kg for MP, 3187.2 ± 265.0 kcal/kg for LP/AGA, and 3424.6 ± 210.4 kcal/kg for LP/SGA infants.
- A significant positive correlation was observed between 28-day TEI and body weight gain (r=0.465, p=0.006).
- A significant inverse correlation was found between 14-day TEI and the rate of body weight loss post-birth (r=-0.491, p=0.0002).
Conclusions:
- Total energy intake (TEI) demonstrates a strong correlation with anthropometric changes in preterm infants.
- TEI serves as a valuable and effective tool for assessing the nutritional requirements of preterm infants.
- This metric can aid clinicians in optimizing nutritional support for preterm infants, potentially improving growth and development.
Objective:
Moderately preterm (MP) (32-33 weeks) and late preterm (LP) (34-36 weeks) infants have higher risks of mortality and growth and developmental problems. We, herein present a new concept of nutritional assessment, total energy intake (TEI), which is the sum total of kilocalories administered in all nutrient forms.
Methods:
Fifty-two preterm infants were classified as MP (n = 12), LP/appropriate for gestational age (LP/AGA) (n = 33), or LP/small for gestational age (LP/SGA) (n = 7). All groups received nutrient therapy by the same protocol. The sum of the daily energy intake at 14 and 28 days after birth was determined.
Results:
TEI was 2822.1 ± 162.1 kcal/kg/28 days in the MP group, 3187.2 ± 265.0 kcal/kg/28 days in the LP/AGA group and 3424.6 ± 210.4 kcal/kg/28 days in the LP/SGA group. In all groups, TEI for 28 days was significantly correlated with body weight gain (r = 0.465, p = 0.006). TEI for 14 days after birth was inversely correlated with the body weight loss rate after birth (r = -0.491, p = 0.0002).
Conclusion:
TEI was well correlated with anthropometric changes after birth. TEI may be used to effectively assess preterm infants' nutritional needs.
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