Influence of the type of electrodes in the assessment of body composition by bioelectrical impedance analysis in the supine position.

Autor: Dupertuis YM; Nutrition Unit, Service of Endocrinology, Diabetology, Nutrition and Therapeutic Education, Department of Medicine, Geneva University Hospital, Geneva, Switzerland. Electronic address: yves.m.dupertuis@hcuge.ch., Pereira AG; Department of Internal Medicine, Botucatu Medical School, UNESP - Univ Estadual Paulista, Botucatu, São Paulo, Brazil. Electronic address: ag.pereira@unesp.br., Karsegard VL; Nutrition Unit, Service of Endocrinology, Diabetology, Nutrition and Therapeutic Education, Department of Medicine, Geneva University Hospital, Geneva, Switzerland. Electronic address: Laurie.Karsegard@hcuge.ch., Hemmer A; Nutrition Unit, Service of Endocrinology, Diabetology, Nutrition and Therapeutic Education, Department of Medicine, Geneva University Hospital, Geneva, Switzerland. Electronic address: Alexandra.Hemmer@hcuge.ch., Biolley E; Nutrition Unit, Service of Endocrinology, Diabetology, Nutrition and Therapeutic Education, Department of Medicine, Geneva University Hospital, Geneva, Switzerland. Electronic address: Emma.Biolley@hcuge.ch., Collet TH; Nutrition Unit, Service of Endocrinology, Diabetology, Nutrition and Therapeutic Education, Department of Medicine, Geneva University Hospital, Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, Geneva, Switzerland. Electronic address: Tinh-Hai.Collet@hcuge.ch., Genton L; Nutrition Unit, Service of Endocrinology, Diabetology, Nutrition and Therapeutic Education, Department of Medicine, Geneva University Hospital, Geneva, Switzerland; Faculty of Medicine, University of Geneva, Geneva, Switzerland. Electronic address: Laurence.Genton@hcuge.ch.
Jazyk: angličtina
Zdroj: Clinical nutrition (Edinburgh, Scotland) [Clin Nutr] 2022 Nov; Vol. 41 (11), pp. 2455-2463. Date of Electronic Publication: 2022 Sep 16.
DOI: 10.1016/j.clnu.2022.09.008
Abstrakt: Background & Aims: The main source of error in body composition assessment of bedridden patients by bioelectrical impedance analysis (BIA) is the electrode inadequacy and placement. As electrocardiogram (ECG) electrodes are often used for BIA measurements, this study aimed to compare three of them with a reference BIA electrode.
Methods: BIA was performed sequentially on 24 healthy subjects in the supine position, using 3 different ECG electrodes (3M® Red Dot® 2330; Ambu® BlueSensor 2300; Ambu® BlueSensor SU-00-C) and the reference electrode (Bianostic AT®) for the BIA device (Nutriguard-M®, Data Input, Germany). Resistance (R), reactance (Xc), phase angle (PhA), appendicular skeletal muscle index (ASMI), fat-free mass index (FFMI) and fat mass percentage (FM%) obtained with the different electrodes were compared using Bland-Altman plots, repeated measures one-way ANOVA and paired t-test. Patient characteristics potentially involved in BIA measurement differences were assessed using linear regression analysis.
Results: The study population consisted of 9 men and 15 women, 33% and 47% of whom were overweight, respectively. The measured R was within the physiological range for all men (428-561 Ω) and women (472-678 Ω), regardless of the type of electrodes used. Compared to the reference electrode, the 3M® Red Dot® 2330 and Ambu® BlueSensor SU-00-C electrodes gave significantly different Xc and PhA values, but only the Ambu® BlueSensor SU-00-C gave significantly different ASMI, FFMI and FM% at 50 kHz, with biases of -0.2 kg/m 2 , -0.3 kg/m 2 and +1.4%, respectively. The higher the current frequency, the lower was the Xc and PhA measured by the Ambu® BlueSensor SU-00-C compared to the reference electrode. These measurement differences seemed mainly due to the too small gel area of the Ambu® BlueSensor SU-00-C (154 mm 2 ) compared to the reference electrode (1311 mm 2 ).
Conclusions: The use of electrodes with small gel area affects BIA measurement in the supine position, especially when PhA is used as an indicator of the nutritional status. Therefore, it is essential to specify the type of electrodes and carry out comparative tests before changing consumables for body composition assessment, to ensure BIA measurement reliability in clinical and research settings.
Competing Interests: Conflict of Interest The authors declare no competing interests.
(Copyright © 2022 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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