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.
Abstract

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