Alterations in the Metabolism of Exogenous Lipid Associated with Sepsis

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Abstract
The responses to an exogenous lipid challenge of nonhypermetabolic surgical patients requiring parenteral nutrition and seriously ill septic patients were compared. All patients received a 500-ml intravenous infusion of a 10% lipid emulsion over a 4-hr period. An early elevation of glycerol and triglyceride was noted during the infusion suggesting chylomicron fractionation. Peak triglyceride levels were higher in the septic group but the rate of lipid clearance appeared essentially identical in both septic and nonseptic patients. Lipoprotein lipase levels remained constant and were equal for both groups. Significant late ketone body production was statistically identical in both groups despite depressed albumin levels in the septic group suggesting adequate hepatic ketogenic capacity in septic as well as nonseptic patients. (Journal of Parenteral and Enteral Nutrition8:169—173, 1984)

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