Evaluation of body composition by bioelectrical impedance spectroscopy: application in chronic renal patients

• Grant number: 17/13736-6
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): November 01, 2017
• Effective date (End): October 31, 2018
• Field of knowledge: Health Sciences - Nutrition - Nutritional Analysis of Population
• Principal Investigator: Paula Garcia Chiarello
• Grantee: Thaísa Ribeiro Govêia
• Host Institution: Faculdade de Medicina de Ribeirão Preto (FMRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

Chronic kidney disease (CKD) is a global public health problem. The pathology itself and the various treatment modalities currently available negatively affect body composition and compromise nutritional status, factors that are strongly related to the high morbimortality rates present in this population. Thus, accurate methods for assessing nutritional status with low cost and easy application are important as screening instruments. In this context, bioelectrical impedance spectroscopy (BIS) has been highlighted as a suitable and available tool: its application can occur by whole body or segmental analysis. Thus, the objective of this research project is to evaluate the concordance and correlation between body composition data provided by segmental and total body BIS analysis with those generated by X-ray absorptiometry (DXA) in CKD patients. A total of 120 volunteers will be evaluated subdivided equally in each of the groups stratified by the type of treatment: conservative, peritoneal dialysis, hemodialysis and renal transplantation. The volunteers will be submitted to body evaluation by DXA (reference method) and by BIS. The values will be presented in mean and standard deviation. The Bland-Altman test will be used for concordance analysis and the Pearson correlation coefficient for correlation evaluations (p <0.05). (AU)