Session Information
Session Title: AA 2022 Posters - General Rehabilitation
Session Time: None. Available on demand.
Disclosures: Andrew C. Olsen, DO: No financial relationships or conflicts of interest
Background and/or Objectives: Dehydration is a major contributor to morbidity and mortality among elderly and frail populations. There are limited options for assessing hydration status without medical evaluation including physical exam, renal panel, urine output among other indicators of volume status. This pilot study evaluates the validity of a novel wearable device that measures hydration for use in both home and clinical settings.
Design: This prospective cross-sectional study validated the hydration measurements of the Hexaband, our novel device, relative to the Impedimed sfb7, a clinical standard of care.
Setting: Hospital outpatient clinic
Participants: 24 healthy individuals aged 28-71 without history of heart disease, kidney disease, swelling, pregnancy, pacemaker implantation.
Interventions: During a single session, participants’ total body water (TBW), extracellular water (ECW), and intracellular water (ICW) were measured with two devices. The Impedimed SfB7 was implemented with electrodes on the hand and foot. The Hexaband was utilized in two configurations: 1) with the same electrodes as the SfB7 using the Impedimed software and 2) hand-to-hand mode with electrodes all on the wrist-worn wearable using our own algorithm. TBW, ECW, and ICW were calculated for all three devices and configurations.
Main Outcome Measures: Lin’s correlation coefficients and mean absolute errors.
Results: Correlation coefficients relating the Impedimed SfB7 to Hexaband in tetrapolar mode were 0.98, 0.93, and 0.99 for TBW, ECW, and ICW respectively. The hand-to-hand resulted in correlations of 0.88, 0.88, and 0.75 for TBW, ECW, and ICW relative to the SfB7 respectively.
Conclusions: This study demonstrates the initial validity of a novel wearable device for measuring body composition. It has the potential to capture subtle changes in volume status outside the hospital setting that can be acted upon, potentially preempting the escalation of care.
Level of Evidence: Level II
To cite this abstract in AMA style:
Olsen AC, Kniely C, Makowski N, Perzynski A, Khare S, Johnson EB. Dehydration Sensor: A Validity Study of a Novel Wearable Device V. Standard of Care [abstract]. PM R. 2022; 14(S1)(suppl 1). https://pmrjabstracts.org/abstract/dehydration-sensor-a-validity-study-of-a-novel-wearable-device-v-standard-of-care/. Accessed May 17, 2025.« Back to AAPM&R Annual Assembly 2022
PM&R Meeting Abstracts - https://pmrjabstracts.org/abstract/dehydration-sensor-a-validity-study-of-a-novel-wearable-device-v-standard-of-care/