|Comparison of bioimpedance methods for estimating total body water and intracellular water changes during hemodialysis|
|Dou, Yanna1,2,3; Liu, Li1,2,3; Cheng, Xuyang1,2,3; Cao, Liyun1,2,3; Zuo, Li1,2,3|
|关键词||Bioimpedance Method Body Fluid Volume Comparison|
|刊名||NEPHROLOGY DIALYSIS TRANSPLANTATION|
|WOS标题词||Science & Technology|
|类目[WOS]||Transplantation ; Urology & Nephrology|
|研究领域[WOS]||Transplantation ; Urology & Nephrology|
|关键词[WOS]||BIOELECTRICAL-IMPEDANCE ANALYSIS ; FLUID ; SPECTROSCOPY ; VOLUMES ; VALIDATION ; ADIPOSITY ; MASS|
Background. The accurate assessment of body fluid volume is important in many clinical situations. Hannan et al. proposed a single-frequency bioimpedance equation (HE) to calculate extracellular water (ECW) and total body water (TBW). There are two equations based on the bioimpedance spectroscopy (BIS) method for the evaluation of body fluid volume: Xitron equations (XE) and body composition spectroscopy equations (BCSE). The aim of the study was to compare the accuracy of these three equations in body fluid volume point estimation in maintenance hemodialysis (MHD) patients.
Methods. The BIS method was performed in MHD patients before and after a hemodialysis (HD) session. TBW, ECW and intracellular water (ICW) were calculated by XE, BCSE and HE, respectively. Hydration status (HS) was calculated using inputs of XE, BCSE and HE. ICW before dialysis was compared to ICW after dialysis. The change of TBW and HS using different equations was compared to actual ultrafiltration volume (AUV) that was calculated as weight difference of pre- to postdialysis.
Results. Fifty MHD patients (27 females) were included in the study. Significant changes in ICW were observed using the XE and HE method with ultrafiltration (XE: 15.51 +/- 5.07 versus 16.17 +/- 5.34 L, P < 0.01; HE: 17.40 +/- 5.13 versus 16.55 +/- 4.71 L, P < 0.01). However, no significant ICW change was observed using BCSE (17.47 +/- 4.35 versus 17.54 +/- 4.36 L, P > 0.05). (sic)TBW_XE and (sic)TBW_HE were significantly different from AUV (XE 1.76 +/- 0.89 versus 2.46 +/- 0.89 L, P < 0.01; HE 4.16 +/- 1.36 versus 2.46 +/- 0.89 L, P < 0.01); however, (sic)TBW_BCSE was much closer to AUV (2.27 +/- 0.90 versus 2.46 +/- 0.89 L, P = 0.129). The change of HS using inputs of BCSE was also closer to AUV (2.41 +/- 0.86 versus 2.46 +/- 0.89 L, P = 1.0).
Conclusion. Our study indicated that BCSE provided a better point estimation of ICW and TBW.
|资助机构||Beijing Municipal Science & ; Technology Commission|
|作者单位||1.Peking Univ, Inst Nephrol, Beijing 100871, Peoples R China|
2.Minist Hlth China, Key Lab Renal Dis, Beijing, Peoples R China
3.Peking Univ, Hosp 1, Dept Med, Div Renal, Beijing 100871, Peoples R China
|Dou, Yanna,Liu, Li,Cheng, Xuyang,et al. Comparison of bioimpedance methods for estimating total body water and intracellular water changes during hemodialysis[J]. NEPHROLOGY DIALYSIS TRANSPLANTATION,2011,26(10):3319-3324.|
|APA||Dou, Yanna,Liu, Li,Cheng, Xuyang,Cao, Liyun,&Zuo, Li.(2011).Comparison of bioimpedance methods for estimating total body water and intracellular water changes during hemodialysis.NEPHROLOGY DIALYSIS TRANSPLANTATION,26(10),3319-3324.|
|MLA||Dou, Yanna,et al."Comparison of bioimpedance methods for estimating total body water and intracellular water changes during hemodialysis".NEPHROLOGY DIALYSIS TRANSPLANTATION 26.10(2011):3319-3324.|