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Intravenous lipid and amino acids briskly increase plasma glucose concentrations in small premature infants
R D Savich1, S L Finley, E S Ogata
1Department of Pediatrics, Northwestern University Medical School, Prentice Women's Hospital, Chicago, IL 60611.
Insights
Intravenous lipid infusions in premature infants can disrupt blood sugar control, especially when combined with amino acids. This impacts how very small babies, receiving glucose, manage their glucose levels.
Area of Science:
- Neonatal nutrition
- Pediatric endocrinology
- Metabolic regulation
Background:
- Premature infants often require intravenous nutrition for growth.
- Lipid emulsions are a common energy source in neonatal intensive care.
- Understanding the metabolic impact of parenteral nutrition is crucial.
Purpose of the Study:
- To assess the glycemic response to different intravenous nutrient combinations in premature infants.
- To investigate the effects of lipid and amino acid infusions on glucose metabolism.
- To identify potential risks associated with parenteral nutrition in vulnerable neonates.
Main Methods:
- Studied 15 very small premature infants receiving continuous glucose infusion.
- Administered intravenous lipid emulsion alone, lipid with amino acids, or amino acids alone.
- Monitored glycemic response, plasma insulin, and glucagon levels.
Main Results:
- Lipid infusions (alone or with amino acids) significantly increased glucose levels compared to amino acids alone.
- The combination of lipid and amino acids led to a faster glucose increase than lipid alone.
- Glucagon increased appropriately with amino acids alone, while insulin levels remained unchanged.
Conclusions:
- Intravenous lipid infusion can significantly alter glucose regulation in premature infants.
- Co-administration of lipids and amino acids exacerbates glycemic disturbances.
- Parenteral nutrition strategies require careful consideration to maintain metabolic stability in neonates.
Abstract:
We determined the glycemic response to intravenous lipid infusion alone, lipid with amino acids, or amino acids alone in 15 very small premature infants receiving constant glucose infusion during early life. Infants who received lipid or lipid and amino acids demonstrated significant increases in glucose compared with infants who received amino acids. The combination of lipid and amino acids resulted in an earlier increase than lipid alone. Although plasma insulin did not change in all three groups, infants who received amino acids alone demonstrated an appropriate increase in glucagon. These data suggest that lipid infusion, a commonly used means of providing nutrition to premature infants, may cause significant disturbances in glucoregulation, particularly when administered with amino acids.