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学科主题: 临床医学
题名:
Estimation of normal hydration in dialysis patients using whole body and calf bioimpedance analysis
作者: Zhu, Fansan1,2; Kotanko, Peter1,2; Handelman, Garry J.1,3; Raimann, Jochen G.1,2; Liu, Li1,2,4; Carter, Mary1,2; Kuhlmann, Martin K.1,6; Seibert, Eric1,2,7; Leonard, Edward F.5; Levin, Nathan W.1,2
关键词: body fluid ; calf bioimpedance ; dry weight ; hemodialysis ; resistivity
刊名: PHYSIOLOGICAL MEASUREMENT
发表日期: 2011-07-01
DOI: 10.1088/0967-3334/32/7/S12
卷: 32, 期:7
收录类别: SCI ; ISTP
文章类型: Proceedings Paper
WOS标题词: Science & Technology
类目[WOS]: Biophysics ; Engineering, Biomedical ; Physiology
研究领域[WOS]: Biophysics ; Engineering ; Physiology
关键词[WOS]: BIOELECTRICAL-IMPEDANCE ANALYSIS ; VENA-CAVA DIAMETER ; DRY-WEIGHT ; HEMODIALYSIS-PATIENTS ; MULTIFREQUENCY BIOIMPEDANCE ; EXTRACELLULAR FLUID ; VECTOR ANALYSIS ; BLOOD-VOLUME ; MODEL ; SPECTROSCOPY
英文摘要:

Prescription of an appropriate dialysis target weight (dry weight) requires accurate evaluation of the degree of hydration. The aim of this study was to investigate whether a state of normal hydration (DW(cBIS)) as defined by calf bioimpedance spectroscopy (cBIS) and conventional whole body bioimpedance spectroscopy (wBIS) could be characterized in hemodialysis (HD) patients and normal subjects (NS). wBIS and cBIS were performed in 62 NS (33 m/29 f) and 30 HD patients (16 m/14 f) pre- and post-dialysis treatments to measure extracellular resistance and fluid volume (ECV) by the whole body and calf bioimpedance methods. Normalized calf resistivity (rho(N,5)) was defined as resistivity at 5 kHz divided by the body mass index. The ratio of wECV to total body water (wECV/TBW) was calculated. Measurements were made at baseline (BL) and at DW(cBIS) following the progressive reduction of post-HD weight over successive dialysis treatments until the curve of calf extracellular resistance is flattened (stabilization) and the rho(N,5) was in the range of NS. Blood pressures were measured pre-and post-HD treatment. rho(N,5) in males and females differed significantly in NS. In patients, rho(N,5) notably increased with progressive decrease in body weight, and systolic blood pressure significantly decreased pre-and post-HD between BL and DW(cBIS) respectively. Although wECV/TBW decreased between BL and DW(cBIS), the percentage of change in wECV/TBW was significantly less than that in rho(N,5) (-5.21 +/- 3.2% versus 28 +/- 27%, p < 0.001). This establishes the use of rho(N,5) as a new comparator allowing a clinician to incrementally monitor removal of extracellular fluid from patients over the course of dialysis treatments. The conventional whole body technique using wECV/TBW was less sensitive than the use of rho(N,5) to measure differences in body hydration between BL and DW(cBIS).

语种: 英语
WOS记录号: WOS:000291348800013
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/66155
Appears in Collections:北京大学第一临床医学院_肾脏内科_期刊论文

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作者单位: 1.Yorkville Dialysis Ctr, Renal Res Inst, New York, NY 10128 USA
2.Univ Massachusetts, Lowell, MA USA
3.Columbia Univ, Dept Chem Engn, New York, NY USA
4.Beth Israel Deaconess Med Ctr, Div Nephrol & Hypertens, New York, NY 10003 USA
5.Peking Univ, Hosp 1, Inst Nephrol, Beijing 100871, Peoples R China
6.Univ Halle Wittenberg, Div Nephrol, Halle, Saale, Germany
7.Vivantes Klinikum Friedrichshain, Div Nephrol, Berlin, Germany

Recommended Citation:
Zhu, Fansan,Kotanko, Peter,Handelman, Garry J.,et al. Estimation of normal hydration in dialysis patients using whole body and calf bioimpedance analysis[J]. PHYSIOLOGICAL MEASUREMENT,2011,32(7).
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