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Vitamin A provision for preterm infants: are we meeting current guidelines?
H Mactier1, M M Mokaya, L Farrell
1Neonatal Unit, Princess Royal Maternity, Glasgow, UK. helen.mactier@ggc.scot.nhs.uk
Insights
Preterm infants often do not receive adequate vitamin A in the first two weeks of life. Early initiation of intravenous vitamin A and consideration of oral supplementation may be necessary.
Area of Science:
- Neonatal Nutrition
- Pediatric Gastroenterology
- Vitamin Metabolism
Background:
- Preterm infants exhibit lower vitamin A stores at birth than term infants.
- Current vitamin A intake recommendations for preterm infants range from 700-1500 IU/kg/day.
- Optimal early nutrition is critical for preterm infant development.
Purpose of the Study:
- To assess vitamin A intake adequacy in preterm infants during the first four weeks of life.
- To identify feeding patterns associated with sufficient vitamin A intake in this population.
Main Methods:
- Retrospective case note review conducted at a UK tertiary neonatal unit.
- Study included 36 preterm infants (median gestation 30 weeks).
- Evaluated mean daily total vitamin A intake over the first four weeks of life.
Main Results:
- Only 11% of infants met recommended vitamin A intake in the first two weeks.
- Vitamin A adequacy was not influenced by gestational age or feeding pattern.
- Intravenous lipid with fat-soluble vitamins was initiated on day 2 per policy.
Conclusions:
- Current intravenous vitamin A supplementation guidelines for preterm infants need revision.
- Early initiation of intravenous lipids with vitamins is recommended.
- Consider early oral vitamin A for enterally fed preterm infants.
Background:
Preterm infants have reduced liver stores of vitamin A at birth compared to term born infants. Current guidelines recommend an intake of 700-1500 IU/kg/day vitamin A, and there is evidence to support higher doses for infants with significant lung disease. The importance of appropriate early nutrition for preterm infants is increasingly becoming apparent.
Objectives:
To examine whether preterm infants admitted to a UK neonatal unit received the currently recommended amounts of vitamin A during the first 4 weeks of life, and to identify the feeding patterns associated with optimal vitamin A intake.
Design:
Retrospective case note review.
Setting:
UK tertiary neonatal unit.
Population:
36 preterm infants with a median gestation of 30 weeks (range 26-33 weeks) and median birth weight of 1305 g (range 880-1800 g).
Main Outcome Measure:
Mean daily total intake of vitamin A in each of the first 4 weeks of life.
Results:
Despite a policy of introducing intravenous lipid supplemented with fat soluble vitamins on day 2, only four infants (11%) consistently met the recommended daily intake of vitamin A during the first 2 weeks of life. Adequacy of vitamin A intake in the first 2 weeks of life was not predicted by gestation or pattern of feeding.
Conclusion:
Recommendations for intravenous vitamin A supplementation in parenterally fed preterm infants require revision. Intravenous lipid with added fat soluble vitamins should be started as soon as possible after birth, and consideration given to early oral vitamin A supplementation in those infants tolerant of enteral feeds.
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