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Which equation should be used to measure energy expenditure in HIV-infected patients?

By Helena Siqueira Vassimon, Jacqueline Pontes Monteiro, Alcyone Artioli Machado, Francisco José Albuquerque de Paula, Andressa Kutschenko and Alceu Afonso Jordão

Abstract

OBJECTIVE: In view of the practical need to use equations for the evaluation of energy expenditure in HIV-infected patients, the objective of the present study was to determine the concordance between the energy expenditure values obtained by indirect calorimetry as the gold standard and those obtained by predictive equations elaborated from data for the healthy population: Harris-Benedict, Schofield and Cunningham, and by equations elaborated from data for HIV-infected patients: Melchior (1991-1993). METHODS: The study was conducted at the Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto on 32 HIV-infected men under treatment with highly active antiretroviral therapy. Resting energy expenditure was measured by indirect calorimetry and estimated on the basis of measurement of O2 consumption and CO2 production. RESULTS: Statistical analysis revealed weak concordance for the Harris-Benedict (0.38) and Cunningham (0.34) equations and satisfactory concordance for the Schofield equation (0.47). Only the two Melchior equations (1991 and 1993) showed strong concordance with the values obtained by indirect calorimetry (0.63 and 0.66, respectively) and could be used in practice. CONCLUSION: The best equations seem to be population-specific, such as the Melchior equations elaborated for HIV-infected patients

Topics: Calorimetria indireta, Metabolismo energético, HIV, Nutrition. Foods and food supply, TX341-641
Publisher: Pontifícia Universidade Católica de Campinas
DOI identifier: 10.1590/S1415-52732013000200010
OAI identifier: oai:doaj.org/article:dde972e70ae14ba381e1248911d78d03
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