ABSTRACT
Objective To explore the relationship of delivery of parenteral fat emulsion and lipid peroxidation,and to observe the safety and effectiveness of parenteral nutrition(PN)in infants with very low birth weight(VLBWI).Methods Thirty infants with VLBWI were randomly divided into 3 groups:the preterm infants received pareneral nutrition containing amino acids and dextrose and soluvit,while intralipid provided separately,intralipid were light exposed(group A,n=10)or light protected(group B,n=10).In group C(n=10),soluvit and vitlipid were co-administered with intralipid and light protected.All the prematures received PN for 7 days and 10 cases of VLBWI not recei-ving PN were collected as control group.Anti-oxidation level,ascorbate,blood glucose,oxygen saturation,serum biochemistry index and body weight were determined before and after experiment.Results Seven days after PN,the MDA concentrations in the test groups all increased(⊿dA was the most,⊿dB was the next,⊿dC was the least).For superoxidedimutuse(SOD)reduction concentrations,⊿dA decreased sharply,then was ⊿dB,⊿dc decreased little,The blood Vit C increase in group B and C were more than group A.Significant changes of MDA,SOD and Vit C existed among the group B,C and A.In the 3 test groups,bilirubin,albumin,prealbumin concentrations were higher after the experiment,but there were no significant changes compared with control group.No significant changes in blood biochemistry,oxygen saturations were found before and after the observation in every group.Conclusions Multivitamin preparations protect fat emulsion against light-induced formation of lipid hydroperoxides,and administering multivitamins with fat emulsion via dark delivery tubing provide a practical way of preventing peroxidation of the lipid while limiting vitamin loss.Furthermore,it is relatively safe to apply fat emulsion intravenously with suitable dose and infusion rate for a few days to VLBWI from the second day of birth who require partial parenteral nutrition.