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Neurodevelopment of preterm infants born at 28 to 36 weeks of gestational age: the role of hypothyroxinemia and long-term outcome at 4 years

AuthorsAres, Susana; Quero, José; Diez, Jesus; Morreale de Escobar, Gabriella
Issue Date2011
PublisherWalter de Gruyter
CitationJournal of Pediatric Endocrinology and Metabolism 24(11-12): 897-902 (2011)
Abstract[Context]: Hypothyroxinemia in premature neonates may affect long-term neurodevelopment. [Objective]: This study aimed to examine the effects of hypothyroxinemia of the newborn preterm infants born at 28-36 weeks of gestational age (GA) on the neurodevelopment at 4 years of age. [Patients]: Prospective observational cohort study conducted in Madrid, Spain. Forty-six preterm infants were included in the study. [Main Outcome]: The effects of the exposure to neonatal hypothyroxinemia on mental development were examined. [Results]: Using regression analyses we found that neonatal T4 had a positive association with general cognitive index and Verbal index, and neonatal FT4 with general cognitive and Memory indexes at 4 years of age. [Conclusions]: The exposure to hypothyroxinemia during the neonatal period of late preterm infants may play role in neurodevelopmental delays. Higher T4 level means a trend to higher indexes and low T4 level means a lower neurodevelopmental indexes at 4 years of age. © 2011 by Walter de Gruyter Berlin Boston.
Identifiersdoi: 10.1515/JPEM.2011.166
issn: 0334-018X
e-issn: 2191-0251
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