PMID: 3752637Jan 1, 1986Paper

A critique of impedance measurements in cardiac tissue

Annals of Biomedical Engineering
R Plonsey, R C Barr

Abstract

The specific impedance of cardiac tissue cannot be measured directly. Instead, the investigator obtains voltage and current measurements and places them into a model of the tissue's structure to infer the impedances of elements of the model. If the model fails to describe major aspects of the real tissue, the results may be worthless, although possibly self-consistent. In the literature of impedance measurement in cardiac tissue, only rarely is the model explicitly described; more commonly, the tissue model is adopted implicitly when equations giving the impedance in terms of voltage and current measurements are adopted. This paper examines the series of models that have been used in specific impedance measurements of cardiac tissue and shows how the same or similar measurements can accurately describe tissue impedivity or can lead to significant errors when inadequate models such as isotropic and anisotropic monodomains (although a part of work of historical merit) are used.

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Citations

Jan 1, 1987·Annals of Biomedical Engineering·B J Roth, F L Gielen
Jan 1, 1988·Annals of Biomedical Engineering·R Plonsey
Jan 1, 1989·Annals of Biomedical Engineering·K W Altman, R Plonsey
Jul 1, 1993·Annals of Biomedical Engineering·R R Poznański
Sep 1, 1988·Medical & Biological Engineering & Computing·K W Altman, R Plonsey
Jul 1, 1990·Medical & Biological Engineering & Computing·R Plonsey
Jun 20, 2006·Annals of Biomedical Engineering·Barbara M JohnstonDavid Kilpatrick
Jun 29, 2006·Annals of Biomedical Engineering·R Sadleir, C Henriquez
Oct 24, 1998·Progress in Biophysics and Molecular Biology·A L Muzikant, C S Henriquez
Jun 24, 2008·Computer Methods in Biomechanics and Biomedical Engineering·Barbara M JohnstonDavid Kilpatrick
Jan 1, 1989·Journal of Electrocardiology·R Plonsey, C S Henriquez
Apr 25, 2014·IEEE Transactions on Bio-medical Engineering·Craig S Henriquez
Jan 1, 1990·IEEE Transactions on Bio-medical Engineering·N A TrayanovaR Plonsey
Apr 29, 1998·IEEE Transactions on Bio-medical Engineering·A L Muzikant, C S Henriquez
Apr 9, 2002·IEEE Engineering in Medicine and Biology Magazine : the Quarterly Magazine of the Engineering in Medicine & Biology Society·Nicholas Sperelakis, Keith McConnell
Sep 24, 1999·IEEE Transactions on Bio-medical Engineering·Y WangY Kim
Jul 31, 2004·American Journal of Physiology. Heart and Circulatory Physiology·Andrew E PollardRoger C Barr
Aug 9, 2005·American Journal of Physiology. Heart and Circulatory Physiology·J James WileyAndrew E Pollard

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