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Simple design for an impedance plethysmograph

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Abstract

A simple and inexpensive impedance plethysmography has been designed. Complete circuit diagrams are provided to facilitate system replication. The operation of each functional unit in the measurement system is described. Particular attention is given to the demodulation chip, which simplifies circuit design and increases measurement performance.

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References

  • Kubicek, W. G., Witsoe, D. A., Paterson, R. P. andFrom, A. H. L. (1970) Development and evaluation of an impedance cardiographic system to measure cardiac output and other cardiac paramters'. NASA Report No. NAS 9-4500.

  • Swanson, D. K. (1976) Measurement errors and origin of electrical impedance changes in the limb. Ph.D. Thesis, Dept. of Electrical and Computer Engineering, University of Wisconsin, Madison.

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Authors and Affiliations

  1. Department of Surgery/Division of Thoracic and Cardiovascular Surgery, University of Wisconsin-Madison, 53706, Madison, WI, USA

    D. K. Swanson & J. G. Webster

  2. Department of Electrical and Computer Engineering, University of Wisconsin-Madison, 53706, Madison, WI, USA

    D. K. Swanson & J. G. Webster

Authors
  1. D. K. Swanson
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  2. J. G. Webster
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Swanson, D.K., Webster, J.G. Simple design for an impedance plethysmograph. Med. Biol. Eng. Comput. 20, 461–465 (1982). https://doi.org/10.1007/BF02442407

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  • DOI: https://doi.org/10.1007/BF02442407

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