Comparison of Dual Energy X-ray Absorptiometry and Bioimpedance in Assessing Body Composition and Nutrition in Peritoneal Dialysis Patients

Journal of Renal Nutrition : the Official Journal of the Council on Renal Nutrition of the National Kidney Foundation
Velena PopovicJames Goya Heaf

Abstract

Peritoneal dialysis (PD) patients are characterized by protein malnutrition and muscle wasting. Reliable, easy, and cheap methods for evaluating nutrition are desirable. Three methods are commonly available: dual-energy X-ray absorptiometry (DXA), bioimpedance (BI), and subjective global assessment (SGA).The objective of the study was to compare the previously mentioned methods for assessment of body composition and nutritional status in PD patients. The study is cross-sectional and consisted of 72 PD patients from a single center PD ambulatorium. Participants were measured twice by DXA, twice by BI, and once by SGA. Measurements included lean tissue mass (LTM), fat tissue mass (FT) and, for BI, overhydration (OH), intracellular water (ICW), and extracellular water (ECW). LTM and FT were indexed to body area (Lean Tissue Index [LTI] and Fat Tissue Index [FTI], respectively), and ICW for height (ICW/ht). We assessed conventional biochemical and clinical variables, using values for normal individuals as a reference. There was good overall agreement between BI and DXA but considerable intra-individual variation (1 standard deviation: FT 5.7 kg; LTM 5.6 kg). Factors affecting the differences were FT, ICW, LTM, and ICW. Obesity (DXA...Continue Reading

Citations

Mar 12, 2019·Therapeutic Apheresis and Dialysis : Official Peer-reviewed Journal of the International Society for Apheresis, the Japanese Society for Apheresis, the Japanese Society for Dialysis Therapy·Rajashri YarragudiAndreas Vychytil
Jan 20, 2021·European Journal of Clinical Nutrition·Kornchanok Vareesangthip, Andrew Davenport
Dec 31, 2018·Journal of Electrical Bioimpedance·Natália T BellafrontePaula G Chiarello
Mar 2, 2021·Journal of Renal Nutrition : the Official Journal of the Council on Renal Nutrition of the National Kidney Foundation·Piyawan KittiskulnamSomchai Eiam-Ong
May 10, 2021·Journal of Renal Nutrition : the Official Journal of the Council on Renal Nutrition of the National Kidney Foundation·Sintra EyreAso Saeed

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