Vitamins--conventional uses and new insights.

Area of Science:

• Nutritional Science
• Neonatal Medicine
• Biochemistry

Background:

• Vitamins are essential for homeostasis and metabolic function, with 4 fat-soluble and 9 water-soluble types.
• Preterm infants, particularly VLBW and ELBW categories, are born with insufficient fat-soluble vitamin stores.
• While water-soluble vitamins are transferred actively, their lack of storage leads to rapid postnatal decline in preterm infants.

Purpose of the Study:

• To highlight the critical need for vitamin supplementation in preterm infants soon after birth.
• To address the challenges in determining precise vitamin requirements due to limited evidence.
• To emphasize the importance of timely vitamin prescription and awareness of factors affecting delivery and uptake.

Main Methods:

• Review of existing literature on vitamin requirements in preterm infants.
• Analysis of vitamin transfer mechanisms (placental and postnatal).
• Consideration of multivitamin preparations for parenteral and enteral administration.

Main Results:

• All VLBW and ELBW infants require prompt vitamin provision post-birth.
• Accurate quantification of individual vitamin needs is hampered by a sparse evidence base.
• Vitamins A, C, and E play vital roles as antioxidants.

Conclusions:

• Timely vitamin supplementation is essential for preterm infants to prevent deficiencies.
• Proactive management, including awareness of potential delivery/uptake issues, is key.
• Further research is needed to establish optimal vitamin dosages and administration routes for neonatal nutritional support.