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An analogue circuit for the computation of stroke volume by the electrical impedance method

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Abstract

An analogue circuit is described for use in conjunction with thedZ/dt, e.c.g. and phonocardiogram signals from an IFM Impedance Cardiograph to measure stroke volume. This is displayed on a digital meter. The circuit can be extended to measure cardiac output.

Sommaire

L'article décrit un circuit analogue servant à mesurer les volumes de battement pour usage en conjonction avec l'e.c.g.dZ/dt et les signaux phonocardiogrammes produits par un cardiographe d'impédance IFM. L'affichage est effectué sur un cadran numérique. Ce circuit peut être étendu pour mesurer le rendement cardiaque.

Zussammenfassung

Es wird eine Analogschaltung zum Einsatz in Verbindung mit dendZ/dt-, e.k.g.-und Phonokardiogrammsignalen von einem IFM-Impedanz-Kardiographen zur Messung des Hubvolumens beschrieben. Die Anzeige erfolgt auf einem digitalen Meßgerät. Die Schaltung kann zur Messung der Herzleistung erweitert werden.

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Authors and Affiliations

  1. Research Department of Anaesthetics, The Royal College of Surgeons of England, Lincoln's Inn Fields, WC2A 3PN, London, England

    A. M. Sandman, D. W. Hill & S. E. R. Mable

Authors
  1. A. M. Sandman
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  2. D. W. Hill
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  3. S. E. R. Mable
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Sandman, A.M., Hill, D.W. & Mable, S.E.R. An analogue circuit for the computation of stroke volume by the electrical impedance method. Med. & biol. Engng. 14, 74–78 (1976). https://doi.org/10.1007/BF02477094

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  • DOI: https://doi.org/10.1007/BF02477094

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