Bioimpedance Method for Human Body Hydration Assessment

Leonov, Vladimir; Lee, Seulki; Londergan, A.; Martin, Robert J.; Raedt, W. De; Hoof, Chris Van

doi:10.1109/embc.2019.8857207

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…Results are promising, detecting edema changes, and needing more experimental tests and validation, mainly real-time observations of unhealthy patients and a quantitative estimation for the sensitivity changes. In [43] a wearable device is proposed for human body hydration assessment based on BI which proposes the measure of TBW placing electrodes between both forearms. The results delivered show measurements done for all frequency ranges (8 to 160 kHz) in discrete test points, with a sensitivity of 700 mL/Ω when calibrated with hydration values from the medical test.…”

Section: Discussionmentioning

confidence: 99%

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From Bioimpedance to Volume Estimation: A Model for Edema Calculus in Human Legs

et al. 2023

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Heart failure (HF) is a severe disease and one of the most important causes of death in our society nowadays. A significant percentage of patients hospitalized for decompensation of heart failure are readmitted after some weeks or months due to an expected bad and uncontrolled HF evolution due to the lack of the patient supervision in real time. Herein is presented a straightforward electric model useful for volume leg section calculus based on the bioimpedance test as a way to assist with the acute HF patient’s supervision. The method has been developed for time-evolution edema evaluation in patients’ corresponding legs. The data are picked up with a wearable device specifically developed for acute heart failure patients. As an initial step, a calibration method is proposed to extract the extracellular volume component from bioimpedance measurements done in healthy subjects, and then applied to unhealthy ones. The intra- and extracellular resistance components are calculated from fitted Cole–Cole model parameters derived from BI spectroscopy measurements. Results obtained in a pilot assay, with healthy subjects and heart failure subjects, show sensitivities in leg volume [mL/Ω], with much lower values for healthy than in unhealthy people, being an excellent biomarker to discriminate between both. Finally, circadian cycle evolution for leg volume has been measured from the bioimpedance test as an extension of the work, enabling an alternative parameter for the characterization of one day of human activity for any person.

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Section: Discussionmentioning

confidence: 99%

“…In [36], the leg impedance was identified as a relevant parameter for acute HF prediction in patients. A wearable device for short-time hydration assessment was developed in [43]. It is based on a four-wire BI test that can measure eight frequencies with a sensitivity of 700-mL TBW volume increments.…”

Section: Introductionmentioning

confidence: 99%

From Bioimpedance to Volume Estimation: A Model for Edema Calculus in Human Legs

et al. 2023

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“…In addition, another study used the bioimpedance method to assess body hydration on cyclists [ 44 ]. A baseline measure of the participant’s bioimpedance was taken for result comparisons.…”

Section: Electrical Sensingmentioning

confidence: 99%

“…However, when the frequency exceeded 100 kHz, the impedance was shown to decrease with lower conductivity. Electrical—Bioimpedance Leonov, V. [ 44 ] 2019 Authors conducted a study on cyclists to assess body hydration using the bioimpedance method Correlation between hydration and the measured resistance. Sensitivity was shown up to around a 700 mL change in hydration across multiple tests.…”

Section: Table A1mentioning

confidence: 99%

Review of Advances in the Measurement of Skin Hydration Based on Sensing of Optical and Electrical Tissue Properties

Gidado

Qassem

Triantis

et al. 2022

Sensors

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The presence of water in the skin is crucial for maintaining the properties and functions of the skin, in particular its outermost layer, known as the stratum corneum, which consists of a lipid barrier. External exposures can affect the skin’s hydration levels and in turn, alter its mechanical and physical properties. Monitoring these alterations in the skin’s water content can be applicable in clinical, cosmetic, athletic and personal settings. Many techniques measuring this parameter have been investigated, with electrical-based methods currently being widely used in commercial devices. Furthermore, the exploration of optical techniques to measure hydration is growing due to the outcomes observed through the penetration of light at differing levels. This paper comprehensively reviews such measurement techniques, focusing on recent experimental studies and state-of-the-art devices.

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Wearable Bioimpedance Measuring Devices

Bertemes-Filho

Morcelles

2021

Lecture Notes in Bioengineering

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Bioimpedance Method for Human Body Hydration Assessment

Cited by 6 publications

References 18 publications

From Bioimpedance to Volume Estimation: A Model for Edema Calculus in Human Legs

From Bioimpedance to Volume Estimation: A Model for Edema Calculus in Human Legs

Review of Advances in the Measurement of Skin Hydration Based on Sensing of Optical and Electrical Tissue Properties

Wearable Bioimpedance Measuring Devices

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