Bioelectrical impedance analysis for assessing hydration status in patients undergoing maintenance hemodialysis

doi:10.5527/wjn.v15.i2.118360

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World Journal of Nephrology

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2220-6124

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Nephrol. Jun 25, 2026; 15(2): 118360
Published online Jun 25, 2026. doi: 10.5527/wjn.v15.i2.118360

Table 3 Correlations of hydration assessment indices with blood pressure and body water parameters before dialysis session (n = 54)

Pre-dialysis parameter		OH	OH/ECW	ECW/body weight
SBP (mmHg)	r	0.374¹	0.352¹	0.217
SBP (mmHg)	P value	0.005¹	0.009¹	0.115
DBP (mmHg)	r	0.316¹	0.297³	0.132
DBP (mmHg)	P value	0.020¹	0.029³	0.342
IDWG (kg)	r	0.482¹	0.505²	0.354¹
IDWG (kg)	P value	< 0.001¹	< 0.001²	0.009¹
TBW (L)	r	0.517²	0.553²	0.089
TBW (L)	P value	< 0.001²	< 0.001²	0.524
ICW (L)	r	0.395¹	0.432¹	-0.104
ICW (L)	P value	0.003¹	< 0.001¹	0.453
ICW (%)	r	-0.115	-0.106	-0.429
ICW (%)	P value	0.409	0.446	0.001
ECW (L)	r	0.540²	0.564²	0.289³
ECW (L)	P value	< 0.001²	< 0.001²	0.034³
ECW (%)	r	0.113	0.104	0.429¹
ECW (%)	P value	0.414	0.452	0.001¹
NT pro BNP (ng/mL)	r	0.181	0.180	0.257
NT pro BNP (ng/mL)	P value	0.228	0.232	0.084

¹Poor correlation.

²Fair correlation.

³Negligible correlation.

SBP: Systolic blood pressure; DBP: Diastolic blood pressure; IDWG: Interdialytic weight gain; TBW: Total body water; ICW: Intracellular water; ECW: Extracellular water; NT pro-BNP: N-terminal pro-brain natriuretic peptide; OH: Overhydration.

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Citation: Borges GLS, Mendes LR, Trombim IC, Goes CR, Vogt BP. Bioelectrical impedance analysis for assessing hydration status in patients undergoing maintenance hemodialysis. World J Nephrol 2026; 15(2): 118360
URL: https://www.wjgnet.com/2220-6124/full/v15/i2/118360.htm
DOI: https://dx.doi.org/10.5527/wjn.v15.i2.118360

Borges GLS, Mendes LR, Trombim IC, Goes CR, Vogt BP. Bioelectrical impedance analysis for assessing hydration status in patients undergoing maintenance hemodialysis. World J Nephrol 2026; 15(2): 118360 [PMID: 42395661 DOI: 10.5527/wjn.v15.i2.118360]

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