Acosta, A.

Caicedo, P.

Corredor, C.

Cortes, Y.

Monterrey, Pedro

Clinical Nutrition Supplements

Spanish

Repositorio Institucional - Pontificia Universidad Javeriana

Late Breaking Abstracts I 169LB005ENERGY INTAKE VARIABILITY IN BOGOTA’S UNIVERSITYSTUDENTS: ITS IMPLICATIONS IN ENERGY INTAKEEVALUATIONY. Cortes1, C. Corredor1, P. Caicedo2, A. Acosta2,P. Monterrey3. 1Nutrition and Biochemistry Department,2Nutrition and Dietetics Program, 3Clinical Epidemiologyand Biostatistics Department, Pontificia UniversidadJaveriana, Bogotá, ColombiaRationale: To describe energy intake variability and toestablish its effect over food intake estimationMethods: Daily food intake of 43 university students wasevaluated during a 28 day period using a self appliedfood consumption diary. Participants were trained in datacollection and weekly controlled to insure data quality.Energy intake was calculated from the Colombian FoodComposition Table. Intake variability was represented ina box-plot graph; variance homogeneity was analyzedby Levene’s test. The number of days necessary toestimate energy intake means, for each individual, wascalculated with different precisions and confidences.Bayesian statistics were used to construct a posterioridistribution of mean energy intake variances, and thenthe population distribution of the number of days toestimate consumption were obtained.Results: Day to day variability was different amongindividuals: energy intake variability and the value ofits means had a direct relationship. Usual energy intakeevaluation protocols in which data is collected for 1 weekperiods or less produce unreliable estimates. Bayesianposteriori distribution was constructed, to representenergy intake variability in the study population, in bothcases non-informative and informative prior distribution.Informative priors were constructed from criteria usuallyapplied by experts in DRI energy constructionConclusion: Both individual variability and number ofdays to estimate energy intake can be represented bya probability distribution. Bayesian statistic gives thenatural theoretical frame for its construction. From thedata studied in a non-informative situation, it was shownthat 2 weeks corresponds to the 95th percentile of thedistribution in the number of days to estimate meanintake with an error of 225 kcal and a 95% confidenceinterval.Disclosure of Interest: None declared.LB006IMPACT OF SHORT FISH OIL INFUSIONS ONCELL MEMBRANE COMPOSITION IN PATIENTSUNDERGOING CORONARY ARTERY BYPASS SURGERY:PRELIMINARY DATAF.R. Delodder1, R. Yerly1, D. Khoudi1, R. Chioléro1,M.M. Berger1. 1Departement of Adult Intensive CareMedicine, Centre Hospitalier Universitaire Vaudois,Lausanne, SwitzerlandRationale: Fish Oil (FO) is known to blunt inflammatoryresponses and reduce arrhythmias. In healthy volun-teers a single short 0.2 g/kg intravenous FO infusionblunts response to endotoxin and causes a significantincorporation of EPA/DHA in the platelets membranes.Oral FO reduces post infarction arrhythmias. Cardiacsurgery patients exhibit a strong inflammatory responseand suffer postoperative arrhythmias. The aim of thestudy is to test if short infusion of FO modifies plateletand cardiomyocytes membrane composition, and clinicalcourse of patients undergoing elective coronary arterybypass surgery.Methods: Patients were randomised to receive 3 shortinfusions 0.2 g/kg of FO (Omegaven, Fresenius Kabi)or placebo. Infusion timing were: evening before (T1),premedication (T3), ICU admission (T6). Blood samples:before and after (T2, T4, T7) each FO infusion and onmorning after surgery (T8). During surgery, the excisedauricle was held for analysis. Determination of triglyc-erides (TG) plasma concentration (safety), platelets &cardiomyocytes membranes fatty acid (FA) composition as% molar weight of total FA. Clinical data were recorded.Statistics: mean±SD, two-way ANOVA, Wilcoxon signedrank.Results: Twelve patients aged 69±11 years (out of 40planned) were enrolled. Plasma TG concentration peakedafter infusions (2.6 to max 8 mmol/L) and reverted topre-infusion levels before next FO infusion. Membranecomposition data available in 11 patients: significant EPAincorporation in cardiomyocytes at (T4), EPA platelets andn-3/n-6 ratio at (T8). No difference found in length of ICUand hospital stay.TableMembrane FA composition (%)T1 T8Control FO Control FOPlateletsn-3/n-6 17.1±2.5 16.5±1.9 17.5±2.11 24.5±3.09*#EPA 0.30±0.19 0.43±0.08 0.18±0.16 1.30±0.25*#DHA 2.0±0.44 2.13±0.51 2.16±0.59 2.36±1.02CardiomyocytesEPA (T4) 0.6±0.14 0.98±0.24**p < 0.05 vs control, #p < 0.05, T1 vs T8.Conclusion: Significant changes in n-3/n-6 ratio, EPAincorporation in cardiomyocytes after 2 perfusions andthe EPA in platelets after 3 perfusions. The TG peak staysin safe ranges. At this stage no clinical changes wereobserved.Disclosure of Interest: None declared.LB007NUTRITIONAL COUNSELLING IMPROVES ENERGYINTAKE AND QUALITY OF LIFE IN HOSPITALISEDCANCER PATIENTSU. Ruefenacht1, M. Ruehlin1, R. Imoberdorf1,P.E. Ballmer1. 1Internal Medicine, KantonsspitalWinterthur, Winterthur, SwitzerlandRationale: Undernutrition is a common problem in cancerpatients. 31 to 87% of cancer patients show loss of bodyweight at the moment of diagnosis of the malignantdisease. We have studied the impact of nutritionaltherapy on food intake and quality of life (QoL) inhospitalised cancer patients.

Energy intake variability in Bogota’s University students : its implications in energy intake evaluation

http://repository.javeriana.edu.co/bitstream/10554/48346/1/1-s2.0-S1744116109703874-main.pdf

Energy intake variability in Bogota’s University students : its implications in energy intake evaluation

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