Jump to ContentJump to Main Navigation
Show Summary Details
More options …

Current Directions in Biomedical Engineering

Joint Journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering

Editor-in-Chief: Dössel, Olaf

Editorial Board: Augat, Peter / Buzug, Thorsten M. / Haueisen, Jens / Jockenhoevel, Stefan / Knaup-Gregori, Petra / Kraft, Marc / Lenarz, Thomas / Leonhardt, Steffen / Malberg, Hagen / Penzel, Thomas / Plank, Gernot / Radermacher, Klaus M. / Schkommodau, Erik / Stieglitz, Thomas / Urban, Gerald A.


CiteScore 2018: 0.47

Source Normalized Impact per Paper (SNIP) 2018: 0.377

Open Access
Online
ISSN
2364-5504
See all formats and pricing
More options …

Short Distance Impedance Pneumography

Michael Klum
  • Corresponding author
  • Technische Universität Berlin, Chair of Electronics and Medical Signal Processing, Einsteinufer 17, Berlin, Germany
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Tianhao Schenck
  • Technische Universität Berlin, Chair of Electronics and Medical Signal Processing, Einsteinufer 17, Berlin, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Alexandru Pielmus
  • Technische Universität Berlin, Chair of Electronics and Medical Signal Processing, Einsteinufer 17, Berlin, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Timo Tigges
  • Technische Universität Berlin, Chair of Electronics and Medical Signal Processing, Einsteinufer 17, Berlin, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Reinhold Orglmeister
  • Technische Universität Berlin, Chair of Electronics and Medical Signal Processing, Einsteinufer 17, Berlin, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2018-09-22 | DOI: https://doi.org/10.1515/cdbme-2018-0028

Abstract

Gold-standards for biosignal acquisition require body-spanning sensor positioning which is contradictory to the high integration of modern wearable medical monitors. In applications where obtrusiveness can decrease accuracy, as in sleep monitoring, compact sensor configurations are not only a matter of convenience. To acquire respiratory signals, most systems rely on nasal cannula pressure sensors or inductance plethysmography. Another well-established method is the impedance pneumography, where we aim to contribute to the field of short distance electrode configurations. Evaluating distances down to 8 cm we report linear correlations above 0.85 with respect to a pneumotachometer reference. We estimate the respiratory rate with an error below 0.2 bpm. Inspiratory and expiratory phase detection is possible with an error below 2.5 %. Using a first order polynomial model we estimated the respiratory flow with a relative error of down to 19 % at 8 cm. We conclude that short distance impedance pneumography is feasible and rough flow and volume estimates are possible using linear models. Further research regarding shorter distances and calibration is of great interest.

Keywords: impedance pneumography; short distance; closely spaced electrodes; unobtrusive; medical monitoring; wearables; respiration; flow; volume; rate; phase; sleep

About the article

Published Online: 2018-09-22

Published in Print: 2018-09-01


Citation Information: Current Directions in Biomedical Engineering, Volume 4, Issue 1, Pages 109–113, ISSN (Online) 2364-5504, DOI: https://doi.org/10.1515/cdbme-2018-0028.

Export Citation

© 2018 by Walter de Gruyter Berlin/Boston.Get Permission

Comments (0)

Please log in or register to comment.
Log in