Concordância entre métodos de estimativa de gasto energético basal em portadores de câncer de próstata: relação com o excesso ponderal

Abstract

Introduction: The mal nutrition can affect 45 to 60% of patients with prostate cancer becoming essential to estimate correctly the Basal Energy Expenditure (BEE) with the objective of propitiate the most appropriate attendance for their nutritional needs. The method to estimate the BEE considered gold standard is the indirect calorimetry, but for his limitations operational and financial, the bioelectrical impedance (BIA) and the predictive formulations are the most used methods, although these methods can present limitations in relation their reliability. Objective: The objective of this study was to compare estimates of BEE obtained by means of formulations and BIA in a groupe of patients with prostate cancer. The BEE was estimated by bioelectrical impedance (BEEm) and calculated from the application of constant formulation in the Dietary Reference Intake (BEEc). The statistical analysis was made through Student t test to comparison of averages, of Pearson correlation and the model Bland-Altman to analysis of agreement, adopting p< 0,05 as significance level. Results: There was significant difference in the averages between GEBc and GEBm, independent of nutritional status, with best correlation and agreement in the individuals without weight excess. Conclusion: It can be observed the importance of the use of prediction formulations that consider the nutritional status of patients. Thus, are necessary studies to determinate the best estimate method of BEE, to be offer the correct nutritional intake for these patients.