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Title: | The Feasibility of Semi-Continuous and Multi-Frequency Thoracic Bioimpedance Measurements by a Wearable Device during Fluid Changes in Hemodialysis Patients | Authors: | SCHOUTTETEN, Melanie Lindeboom, Lucas DE CANNIERE, Helene PIETERS, Zoe BRUCKERS, Liesbeth Brys, Astrid D. H. Van Hoof, Chris van der Heijden , Patrick Groenendaal, Willemijn PEETERS, Jacques DE MOOR, Bart Kooman, Jeroen P. VANDERVOORT, Pieter |
Issue Date: | 2024 | Publisher: | MDPI | Source: | SENSORS, 24 (6) (Art N° 1890) | Abstract: | Repeated single-point measurements of thoracic bioimpedance at a single (low) frequency are strongly related to fluid changes during hemodialysis. Extension to semi-continuous measurements may provide longitudinal details in the time pattern of the bioimpedance signal, and multi-frequency measurements may add in-depth information on the distribution between intra- and extracellular fluid. This study aimed to investigate the feasibility of semi-continuous multi-frequency thoracic bioimpedance measurements by a wearable device in hemodialysis patients. Therefore, thoracic bioimpedance was recorded semi-continuously (i.e., every ten minutes) at nine frequencies (8-160 kHz) in 68 patients during two consecutive hemodialysis sessions, complemented by a single-point measurement at home in-between both sessions. On average, the resistance signals increased during both hemodialysis sessions and decreased during the interdialytic interval. The increase during dialysis was larger at 8 kHz (triangle 32.6 ohm during session 1 and triangle 10 ohm during session 2), compared to 160 kHz (triangle 29.5 ohm during session 1 and triangle 5.1 ohm during session 2). Whereas the resistance at 8 kHz showed a linear time pattern, the evolution of the resistance at 160 kHz was significantly different (p < 0.0001). Measuring bioimpedance semi-continuously and with a multi-frequency current is a major step forward in the understanding of fluid dynamics in hemodialysis patients. This study paves the road towards remote fluid monitoring. | Notes: | Schoutteten, MK (corresponding author), Hasselt Univ, Fac Biomed & Life Sci, Limburg Clin Res Ctr, Mobile Hlth Unit, B-3590 Diepenbeek, Belgium.; Schoutteten, MK (corresponding author), Ziekenhuis Oost Limburg Genk, Dept Future Hlth, Synaps Pk 1, B-3600 Genk, Belgium.; Schoutteten, MK (corresponding author), imec Netherlands Holst Ctr, Dept Hlth Res, High Tech Campus 31, NL-5656 AE Eindhoven, Netherlands. melanie.schoutteten@uhasselt.be; lucas.lindeboom@imec.nl; helene.decanniere@uhasselt.be; astrid.brys@mumc.nl; bart.demoor@uhasselt.be |
Keywords: | bioimpedance;thoracic;semi continuous;multi-frequency;wearable | Document URI: | http://hdl.handle.net/1942/42815 | e-ISSN: | 1424-8220 | DOI: | 10.3390/s24061890 | ISI #: | 001193408200001 | Rights: | 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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