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Risk factors for rickets in preterm infants

Risk factors for rickets in preterm infants
  • Prematurity and very low birth weight (<1500 g)
  • Fetal growth restriction, especially infants with birth weight <3rd percentile for gestational age (refer to UpToDate content on fetal [intrauterine] growth restriction)
  • Long-term parenteral nutrition (>4 weeks)
  • Bronchopulmonary dysplasia treated with loop diuretics and/or fluid restriction
  • Long-term postnatal corticosteroid use
  • History of necrotizing enterocolitis or other diseases causing intestinal failure, especially in patients who undergo surgical intervention
  • Feeds that do not have high mineral content (eg, due to poor tolerance of fortified feeds)
  • Metabolic or endocrine disorders including severe cholestasis or renal disease
Adapted from: Abrams SA. Calcium and vitamin d requirements of enterally fed preterm infants. Pediatrics 2013; 131:e1676.
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