ArticleFrontiers in endocrinology2025
Effects of high-dose vitamin D supplementation on bone mineral density in very low birth weight preterm infants.
Article in Frontiers in endocrinology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Vitamin D deficiency is common among very low birth weight (VLBW) preterm infants due to challenges in achieving adequate enteral nutrition and reduced transplacental transfer. Supplementation with 800 IU/day of vitamin D has been shown to safely and effectively increase serum 25-hydroxyvitamin D [25(OH)D] levels above 30 ng/mL when initiated at two weeks of age and continued until hospital discharge. Objective: This study aimed to evaluate whether daily supplementation with 800 IU of vitamin D significantly improves bone mineral density, as measured by dual-energy X-ray absorptiometry (DEXA), in VLBW infants at discharge, compared to supplementation with 400 IU/day. Methods: We retrospectively reviewed the medical records of 215 VLBW infants with birth weights under 1,500 g who were admitted to the neonatal intensive care unit at Hanyang University Seoul Hospital between January 2010 and December 2023. The infants were divided into two groups based on their daily vitamin D intake of either 400 IU or 800 IU, initiated on day 14 of life after trophic feeding was established. Bone mineral apparent density (BMAD) was assessed at discharge using whole-body DEXA (Hologic QDR-4500, infant mode). Results: Maternal age (32.01 ± 3.43 vs. 33.34 ± 4.39 years, Conclusion: Daily supplementation of 800 IU of vitamin D was associated with improved bone mineralization, as measured by DEXA, at discharge in VLBW infants.
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