title: [Thermogenesis during parenteral nutrition and after oral meal].
abstract: The aim of the study was to assess thermogenesis during parenteral feeding (group A) and after an oral test meal of a polymeric diet (group B). Carbohydrates, fat and protein ratios in the oral meal and parenteral mixture were: 51:34:15 and 76:11:13, resp. In both situations 20% of resting energy expenditure (REE) was administered-as a bolus oral meal or during 120 min. of intravenous infusion. Mean results of respiratory gas exchange of 15 min. periods were used for calculations. Basal respiratory quotient (RQ) in group A and B was 0.841 and 0.806 resp (difference not significant; NS); peak RQ was 0.910 and 0.924 resp. (NS). Peak RQ in group B was significantly higher than basal (p < 0.006). REE in group A and B was 1,416 +/- 0,231 kj/kg/15 min. and 1,322 +/- 0,226 kj/kg/15 min. resp. (NS). Peak thermic effect (expressed as the rise of REE in percent of the energy content of the nutrients) was: 4.778% and 5.135% resp. (NS). Postprandial thermogenesis is not dependent on the route of administration of nutrients (parenteral or oral). The proportion of substrate utilisation depends on the content of the meal or parenteral mixture.
authors.affiliation: Oddział Gastroenterologii Centrum Zdrowia Dziecka w Warszawie.
authors.forename: J
authors.initials: J
authors.lastname: Ksiazyk
authors.forename: J
authors.initials: J
authors.lastname: Kierkuś
authors.forename: M
authors.initials: M
authors.lastname: Lyszkowska
authors.forename: A
authors.initials: A
authors.lastname: Porczyk
mesh_terms: D000293:Adolescent; D002648:Child; D004734:Energy Metabolism; D005260:Female; D006801:Humans; D007410:Intestinal Diseases; D008297:Male; D008657:Metabolic Clearance Rate; D010288:Parenteral Nutrition
vernacular_title: Termogeneza podczas zywienia pozajelitowego i po posiłku doustnym.