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Preterm infants’ early growth and brain white matter maturation at term age

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Abstract

Background

Normal intrauterine conditions are essential to normal brain growth and development; premature birth and growth restriction can interrupt brain maturation. Maturation processes can be studied using diffusion tensor imaging.

Objective

The aim of this study was to use tract-based spatial statistics to assess the effect that early postnatal growth from birth to 40 gestational weeks has on brain white matter maturation.

Materials and methods

A total of 36 preterm infants were accepted in the study. Postnatal growth was assessed by weight, length and head circumference. Birth weight z-score and gestational age were used as confounding covariates.

Results

Head circumference catch-up growth was associated with less mature diffusion parameters (P < 0.05). No significant associations were observed between weight or length growth and diffusion parameters.

Conclusion

Growth-restricted infants seem to have delayed brain maturation that is not fully compensated at term, despite catch-up growth.

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Correspondence to Virva Lepomäki.

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Lepomäki, V., Leppänen, M., Matomäki, J. et al. Preterm infants’ early growth and brain white matter maturation at term age. Pediatr Radiol 43, 1357–1364 (2013). https://doi.org/10.1007/s00247-013-2699-9

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  • DOI: https://doi.org/10.1007/s00247-013-2699-9

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