Single- and multi-frequency bioelectrical impedance analyses to analyse body composition in maintenance haemodialysis patients: comparison with dual-energy x-ray absorptiometry

被引:41
作者
Donadio, C. [1 ]
Ben Halim, A.
Caprio, F.
Grassi, G.
Khedr, B.
Mazzantini, M.
机构
[1] Univ Pisa, Dept Internal Med, Nephrol Sect, Pisa, Italy
[2] Univ Pisa, Dept Internal Med, Rheumatol Sect, Pisa, Italy
关键词
body composition; fat mass; fat-free mass; lean body mass; DXA; BIA; haemodialysis;
D O I
10.1088/0967-3334/29/6/S43
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
The aim of this study was to evaluate the adequacy of single-frequency (sf-BIA) and multi-frequency bioelectrical impedance analyses (mf-BIA), in comparison with dual-energy x-ray absorptiometry (DXA), to evaluate body composition in maintenance haemodialysis (MHD) patients. Body composition of 27 adult MHD patients ( 9 f, 18 m), BMI 17.5-34.4 kg m(-2), was examined with DXA and BIA, with two different sf-BIA and 1 mf-BIA analysers. Biochemical markers of nutritional status and adequacy of dialytic treatment were also determined. Fat mass ( FM) estimated by the different BIA analysers was found to be slightly but significantly higher than FM measured by DXA. In contrast, fat-free mass (FFM) obtained with BIA was found to be slightly but significantly lower than FFM DXA. No significant differences were found between LBM-DXA ( that is FFM-DXA minus bone mass) and the different FFM BIA. The lowest mean prediction error versus DXA values was found with sf1BIA. In any case, a close correlation was found between all BIA values and DXA values, particularly for FFM. Furthermore, FFM and LBM results were significantly correlated with serum creatinine, which in MHD patients is an indicator of muscle mass. These results indicate that BIA can be used to evaluate body composition in MHD patients.
引用
收藏
页码:S517 / S524
页数:8
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