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Electrical waveforms for cardiac defibrillation which dissipate least heat in the cardiac circuit

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Abstract

An analytical approach to the problems of waveform optimisation for cardiac defibrillation is presented. A theoretical analysis based upon an assumed equivalent circuit with constant parameters has shown that (a) thermal dissipation within the resistive tissue in series with the cardiac component of the load is minimised if the charge through it is made to flow at a constant rate, and (b) in all but extreme situations the thermal dissipation in the cardiac circuit as a whole is minimised when a constant current pulse is used to defibrillate.

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References

  • Crampton, R. (1980) Accepted, controversial, and speculative aspects of ventricular defibrillation.Progress in Cardiovascular Diseases,23, 167–186.

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  1. A. Furness

    Present address: Department of Electrical & Electronic Engineering, North Staffordshire Polytechnic, England

Authors and Affiliations

  1. W. E. Dunn Unit of Cardiology, University of Keele, Keele, Staffordshire, England

    G. Hoffmann de Visme & A. Furness

Authors
  1. G. Hoffmann de Visme
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  2. A. Furness
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Hoffmann de Visme, G., Furness, A. Electrical waveforms for cardiac defibrillation which dissipate least heat in the cardiac circuit. Med. Biol. Eng. Comput. 21, 259–263 (1983). https://doi.org/10.1007/BF02478491

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  • DOI: https://doi.org/10.1007/BF02478491

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