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Impedance plethysmography in human limbs

Part 1 On electrodes and electrode geometry

  • Transducers and Electrodes
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Abstract

Electrode design and electrode positioning are important factors in blood flow measurements using impedance plethysmography. Optimal electrode type and accurate positioning will decrease measurement errors and improve the signal-to-noise-ratio. Disk electrodes were found to be superior to tape electrodes because of their better skin-electrode stability and because they prevent limb compression. The distance between current electrodes and potential electrodes should be greater than 2·3 R (disk electrodes) and 1·5 R (tape electrodes) to avoid the influence of the so-called diffusion resistance (R is the radius of the limb at the electrode site).

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Authors and Affiliations

  1. Department of Electrical Engineering, Okayama University, 700, Okayama, Japan

    Y. Yamamoto & T. Yamamoto

  2. Department of Biomedical Engineering, Linköping University, S-581 85, Linköping, Sweden

    P. Å. Öberg

Authors
  1. Y. Yamamoto
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  2. T. Yamamoto
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  3. P. Å. Öberg
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Yamamoto, Y., Yamamoto, T. & Öberg, P.Å. Impedance plethysmography in human limbs. Med. Biol. Eng. Comput. 29, 419–424 (1991). https://doi.org/10.1007/BF02441664

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  • DOI: https://doi.org/10.1007/BF02441664

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