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

Observational Study

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 4 Correlations of hydration assessment indices with blood pressure and body water parameters after dialysis session (n = 54)

Post-dialysis parameter		OH	OH/ECW	ECW/body weight
SBP (mmHg)	r	0.520²	0.495¹	0.252
SBP (mmHg)	P value	< 0.001²	< 0.001¹	0.066
DBP (mmHg)	r	0.393¹	0.343¹	0.055
DBP (mmHg)	P value	0.003¹	0.011¹	0.695
IDWG (kg)	r	0.339¹	0.367¹	0.184
IDWG (kg)	P value	0.012¹	0.006¹	0.183
TBW (L)	r	0.364¹	0.548²	0.062
TBW (L)	P value	0.007¹	< 0.001²	0.657
ICW (L)	r	0.235	0.372¹	-0.172
ICW (L)	P value	0.087	0.006¹	0.214
ICW (%)	r	-0.122	-0.162	-0.368¹
ICW (%)	P value	0.378	0.241	0.006¹
ECW (L)	r	0.435¹	0.632²	0.329¹
ECW (L)	P value	0.001¹	< 0.001²	0.015¹
ECW (%)	r	0.216	0.290³	0.559²
ECW (%)	P value	0.117	0.034³	< 0.001²
NT pro BNP (ng/mL)	r	0.310¹	0.269	0.427¹
NT pro BNP (ng/mL)	P value	0.036¹	0.070	0.003¹

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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