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Effects of early parenteral nutrition on the development of premature infants born at 22–23 weeks of gestation: a retrospective cohort study evaluated by brain magnetic resonance imaging

Abstract

Background

The effect of early parenteral nutrition (EPN) therapy on brain development in extremely premature infants at a gestational age (GA) of 22–25 weeks remains unknown.

Objectives

This study investigated the effect of EPN therapy on GA 22 to 25 weeks of gestation using magnetic resonance imaging (MRI) global brain abnormality score (GBAS).

Subjects

Forty-six preterm infants born before 26 weeks of gestation were divided into the GA 22–23 weeks (GA 22–23; n = 18) and GA 24–25 weeks (GA 24–25; n = 28) group.

Methods

Each infant received ≥3.0 g/kg/day of amino acids from day 1 of life and ≥1.0 g/kg/day of lipid emulsion the next day. Weight change during hospitalization, GBAS at discharge, and developmental quotient (DQ) until three years old were compared between the groups.

Results

GA 22–23 showed long-term postnatal weight loss, but weight at 41 weeks of postmenstrual age did not differ between the groups. The GBAS score was not significantly different, but the head circumference was smaller in GA 22–23 than in GA 24–25 until 2 years old. The DQ at 1–1.5 years old was lower in GA 22–23 than that of GA 24–25; however, there was no significant difference in DQ after 2 years old between the groups.

Conclusions

The effect of nutritional support with EPN therapy in premature neonates born at <24 weeks of gestation may still be inadequate. GBAS is useful for assessing brain development in very preterm infants, and the importance of nutritional support during the first few weeks of life should continue to be explored.

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Fig. 1: Schematic illustration of the measurement details of the brain regions.
Fig. 2: Changes in the Z score of the body weight during the course of hospitalization.

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Data availability

The datasets generated and analyzed in this study are available from the corresponding author upon reasonable request.

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Acknowledgements

We thank the faculty, staff, and all the participants in this study for their support.

Author information

Authors and Affiliations

Authors

Contributions

Mayumi Tsukayama, Data curation, Writing–original draft preparation. Haruna Azuma and Itsuki Oshiro contributed equally to the data curation and wrote the original draft preparation. Tomohide Yoshida: Conceptualization, methodology, writing (reviewing and editing), visualization, and investigation. Hideki Goya: Supervision and Reviewing. Koichi Nakanishi: Supervision. Reviewing and editing. Final approval of the submitted version.

Corresponding author

Correspondence to Tomohide Yoshida.

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Competing interests

The authors declare no competing interests.

Ethics approval

This retrospective cohort study was conducted with the approval of the institutional ethics committee of the University of the Ryukyus (No. 1725). Consent of subjects was obtained by opting out to their parents.

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Tsukayama, M., Azuma, H., Oshiro, I. et al. Effects of early parenteral nutrition on the development of premature infants born at 22–23 weeks of gestation: a retrospective cohort study evaluated by brain magnetic resonance imaging. Eur J Clin Nutr (2024). https://doi.org/10.1038/s41430-024-01504-x

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