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Updated: Jan 15, 2026
07:17
Evaluation of Fluid Overload by Bioelectrical Impedance Vectorial Analysis
Published on: August 17, 2022
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Volume Overload Assessed by Vector Impedance Analysis and Physical Function in Hemodialysis Patients.
Geovana Martin-Alemañy1, Monserrat Pérez-Navarro2, Paola Miranda-Alatriste3
1School of Nutritional Science and Wellness, The University of Arizona, Tucson, Arizona, USA.
Hemodialysis International. International Symposium on Home Hemodialysis
|January 14, 2026
Summary
Volume overload is linked to reduced physical function in hemodialysis patients, but not muscle strength. This highlights the importance of monitoring fluid status for maintaining physical function in this population.
Area of Science:
- Nephrology
- Geriatrics
- Physiology
Background:
- Skeletal muscle mass loss in chronic kidney disease (CKD) correlates with poor outcomes.
- The effect of volume overload on physical function and muscle strength in hemodialysis (HD) patients is not well understood.
Purpose of the Study:
- To investigate the relationship between volume overload, physical function, and muscle strength in individuals undergoing hemodialysis.
Main Methods:
- Fifty-two HD patients were assessed for muscle strength (hand dynamometry) and physical function (short physical performance battery).
- Bioelectrical impedance vector analysis (BIVA) was used to evaluate hydration status.
- Multivariate logistic regression analyzed the association between volume overload and outcomes.
Main Results:
- Reduced physical function was significantly associated with volume overload (p < 0.0001).
- Individuals with low physical function showed signs of excess fluid, while those with normal function had adequate hydration.
- No significant association was found between volume overload and muscle strength.
Conclusions:
- Volume overload is prevalent in hemodialysis patients with reduced physical function.
- While volume overload impacts physical function, it does not appear to affect muscle strength in this cohort.
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