Finite difference model of thoracic fields and current flow due to surface applied defibrillation voltages

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

A finite difference model with 216000 elements was developed based on magnetic resonance (MR) images to determine an improved electrode size and position for external electrode defibrillation. With 10-10 cm electrodes located in the standard position on the anterior thoracic surface 31% of the current passed through the entire heart but only 8.5% of the current passed through the myocardium. Moving each electrode laterally 3.3 cm reduced the current passing through the heart to 25.4% but improved the uniformity of the current passing the myocardium by nearly a factor of two based on an index developed to assess electrode performance. It appears an improved electrode size and position can be developed but its effect on the output level settings used with commercial defibrillators needs to be carefully considered because of load impedance changes.

Original languageEnglish (US)
Title of host publicationProceedings - Computers in Cardiology, CIC 1992
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages711-714
Number of pages4
ISBN (Electronic)0818635525, 9780818635526
DOIs
StatePublished - Jan 1 1992
Event1992 IEEE Conference on Computers in Cardiology, CIC 1992 - Durham, United States
Duration: Oct 11 1992Oct 14 1992

Publication series

NameProceedings - Computers in Cardiology, CIC 1992

Conference

Conference1992 IEEE Conference on Computers in Cardiology, CIC 1992
CountryUnited States
CityDurham
Period10/11/9210/14/92

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