Vitamin D status in very low birth weight infants and response to vitamin D intake during their NICU stays: a prospective cohort study
2021
Objective To evaluate vitamin D status in very low birth weight (VLBW) infants and response to vitamin D intake. Study design In this prospective cohort study of VLBW infants, 25-hydroxyvitamin D [25(OH)D] was measured regularly starting at birth. Daily vitamin D intake was estimated from parenteral and enteral sources. Results Of the included 83 infants born between November 2016 and March 2018, 44 (53%) had 25(OH)D 100 ng/mL during the study period. Infants whose intake was > 600 IU/day had higher prevalence of vitamin D excess (VDE). Conclusion In our study, low 25(OH)D was common in VLBW infants at birth. Vitamin D intake of 120-260 IU/day from parenteral and 200-400 IU/day from enteral route was appropriate for VLBW infants to achieve VDS. Doses > 600 IU/day increased risk of VDE.
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