Intravenous lipid emulsions are the major sources of non-protein energy and provision of required essential fatty acids.
The reference lipid emulsion, widely used for many years, is prepared from soybean oil, which is rich in omega 6 polyunsaturated fatty acids and phytosterols that contribute to hepatotoxicity and their metabolites result in pro-inflammatory eicosanoid production.
Existing evidence strongly supports a pathogenetic role of inflammation and oxidative stress on parenteral nutrition associated liver disease.
Subsequent development of lipid emulsions has focused on reducing the amount of soybean oil and replacing it with other oils.Moreover the omega 3 fatty acids from fish oil are metabolized to anti-inflammatory eicosanoids which can prevent inflammatory responses.
A novel multicomponent lipid emulsion may prevent liver injury, improve growth and decrease morbidity in preterm infants.