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Title: Effect of critical illness on Triglyceride absorption
Authors: Abdelhamid, YA
Cousins, CE
Sim, JA 
Bellon, MS
Nguyen, NQ
Horowitz, M
Chapman, MJ 
Deane, AM
Keywords: Triglyceride
critical illness
enteral nutrition
research and diseases
Issue Date: Nov-2015
Source: Abdelhamid YA, Cousins CE, Sim JA, Bellon MS, Nguyen NQ, Horowitz M, Chapman MJ, Deane AM. Effect of Critical Illness on Triglyceride Absorption. J Parenter Enteral Nutr, 2015;39:966-972.
Journal Title: Journal of parenteral and enteral nutrition
Abstract: Abstract BACKGROUND: Adequate nutrition support for critically ill patients optimizes outcome, and enteral feeding is the preferred route of nutrition. Small intestinal glucose absorption is frequently impaired in critical illness. Despite lipid being a major constituent of liquid nutrient administered, there is little information about lipid absorption during critical illness. OBJECTIVES: To determine small intestinal lipid, as well as glucose, absorption in critical illness compared with health. MATERIALS AND METHODS: Twenty-nine mechanically ventilated critically ill patients and 16 healthy volunteers were studied. Liquid nutrient (60 mL, 1 kcal/mL), containing 200 µL (13)C-triolein and 3 g 3-O-methyl-glucose (3-OMG), was infused directly into the duodenum at a rate of 2 kcal/min. Exhaled (13)CO2 and serum 3-OMG concentrations were measured at timed intervals over 360 minutes. Lipid absorption was measured as the cumulative percentage dose (cPDR) of (13)CO2 recovered at 360 minutes. Glucose absorption was measured as the area under the 3-OMG concentration curve. Data are median (range) and analyzed using the Mann-Whitney U and Pearson correlation tests. RESULTS: Lipid absorption was markedly less in the critically ill (cPDR(13)CO2: patients, 22.6% [0%-100%] vs healthy participants, 40.7% [5.3%-84.7%]; P = .018). While glucose absorption was less at 60 minutes in the critically ill (3-OMG60: 13.2 [3.5-29.5] vs 21.1 [9.3-31.9] mmol/L·min; P = .003), this was not apparent at 360 minutes (3-OMG360: 92.7 [54.5-147.9] vs 107.9 [64.0-168.7] mmol/L·min; P = .126). There was no relationship between lipid and glucose absorption. CONCLUSION: Small intestinal absorption of lipid is diminished during critical illness.
DOI: 10.1177/0148607114540214
ISSN: 0148-6071
Type: Journal Article
Affiliates: Australian and New Zealand College of Anaesthetists
Appears in Collections:Scholarly and Clinical

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