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Open AccessArticle
Day-to-Day Variability in Measurements of Respiration Using Bioimpedance from a Non-Standard Location
by
Krittika Goyal
Krittika Goyal
Prof. Dr. Krittika Goyal currently serves as a Visiting Lecturer of Manufacturing and Mechanical at [...]
Prof. Dr. Krittika Goyal currently serves as a Visiting Lecturer of Manufacturing and Mechanical Engineering Technology at the Rochester Institute of Technology (Rochester, NY, USA). She received her B.E. and M.E. degrees in Electronic Instrumentation and Control from Thapar University (Patiala, India) in 2016 and her Ph.D. in Microsystems Engineering from the Rochester Institute of Technology (RIT) in 2023. Her research deals with improving the signal quality from dry electrodes to overcome the challenges of in-home physiological monitoring devices. Her research interests mainly include biomedical instrumentation, sensors and transducers, noninvasive physiological measurements, and their computational modeling.
1,
Dishant Shah
Dishant Shah 1 and
Steven W. Day
Steven W. Day
Prof. Dr. Steven W Day is currently the Head of the Department of Biomedical Engineering, at of He a [...]
Prof. Dr. Steven W Day is currently the Head of the Department of Biomedical Engineering, at Rochester Institute of Technology (Rochester, USA). He holds a B.S. in Mechanical Engineering and a Ph.D. in
Aerospace Engineering from the University of Virginia, as well as a diploma from the von Karman Institute for Fluid Dynamics, Belgium. He joined the faculty of KGCOE at Rochester Institute of Technology (RIT) in 2005. Dr. Day has taught courses in mechanical and biomedical engineering programs and is active in
guiding multidisciplinary senior design teams and advising graduate theses. Most recently, Prof. Dr. Day collaborated with a group of Evolutionary Biologists and experts in Biomechanics at the University of California, Davis on a series of studies involving the complex application of fluid dynamics to suction feeding in fish. His research interests mainly include application methods in experimental and computational fluid mechanics, applied to a range of applied and biological flows.
2,*
1
Department of Manufacturing and Mechanical Engineering Technology, Rochester Institute of Technology, Rochester, NY 14623, USA
2
Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY 14623, USA
*
Author to whom correspondence should be addressed.
Sensors 2024, 24(14), 4612; https://doi.org/10.3390/s24144612 (registering DOI)
Submission received: 28 May 2024
/
Revised: 9 July 2024
/
Accepted: 12 July 2024
/
Published: 16 July 2024
Abstract
Non-invasive monitoring of pulmonary health may be useful for tracking several conditions such as COVID-19 recovery and the progression of pulmonary edema. Some proposed methods use impedance-based technologies to non-invasively measure the thorax impedance as a function of respiration but face challenges that limit the feasibility, accuracy, and practicality of tracking daily changes. In our prior work, we demonstrated a novel approach to monitor respiration by measuring changes in impedance from the back of the thigh. We reported the concept of using thigh–thigh bioimpedance measurements for measuring the respiration rate and demonstrated a linear relationship between the thigh–thigh bioimpedance and lung tidal volume. Here, we investigate the variability in thigh–thigh impedance measurements to further understand the feasibility of the technique for detecting a change in the respiratory status due to disease onset or recovery if used for long-term in-home monitoring. Multiple within-session and day-to-day impedance measurements were collected at 80 kHz using dry electrodes (thigh) and wet electrodes (thorax) across the five healthy subjects, along with simultaneous gold standard spirometer measurements for three consecutive days. The peak–peak bioimpedance measurements were found to be highly correlated (0.94 ± 0.03 for dry electrodes across thigh; 0.92 ± 0.07 for wet electrodes across thorax) with the peak–peak spirometer tidal volume. The data across five subjects indicate that the day-to-day variability in the relationship between impedance and volume for thigh–thigh measurements is smaller (average of 14%) than for the thorax (40%). However, it is affected by food and water and might limit the accuracy of the respiratory tidal volume.
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MDPI and ACS Style
Goyal, K.; Shah, D.; Day, S.W.
Day-to-Day Variability in Measurements of Respiration Using Bioimpedance from a Non-Standard Location. Sensors 2024, 24, 4612.
https://doi.org/10.3390/s24144612
AMA Style
Goyal K, Shah D, Day SW.
Day-to-Day Variability in Measurements of Respiration Using Bioimpedance from a Non-Standard Location. Sensors. 2024; 24(14):4612.
https://doi.org/10.3390/s24144612
Chicago/Turabian Style
Goyal, Krittika, Dishant Shah, and Steven W. Day.
2024. "Day-to-Day Variability in Measurements of Respiration Using Bioimpedance from a Non-Standard Location" Sensors 24, no. 14: 4612.
https://doi.org/10.3390/s24144612
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