NDLI: Estimate of electromotive surface dimension during ventricular fibrillation

Content Provider	IEEE Xplore Digital Library
Author	Witkowski, Francis X. Penkoske, Patricia A. Kavanagh, Katherine M.
Copyright Year	1992
Description	Author affiliation: Departments of Internal Medicine, Pediatrics and Surgery, University of Alberta School of Medicine, Edmonton, Alberta, Canada T6G 2R7 (Witkowski, Francis X.; Penkoske, Patricia A.; Kavanagh, Katherine M.)
Abstract	The accurate identification of local activation from extracellular recording electrodes attached to the beating heart is critical for the development of a mechanistic understanding of serious cardiac rhythm disturbances in both experimental animals and man. One of the most complex of these rhythm disturbances is ventricular fibrillation, a common cause of sudden cardiac death in man. When using bipolar extracellular recording electrodes to detect local activation, the spatial extent of the upstroke of the action potentials that generate the extracellular waveform determines the optimal interelectrode distances for the bipolar electrodes. This spatial length has been well characterized for normal cardiac conduction at around 1.0 mm on the epicardial surface. We found that for many of the activations occurring during early ventricular fibrillation this length is similarly around 1.0 mm.
Starting Page	631
Ending Page	632
File Size	185463
Page Count	2
File Format	PDF
ISBN	0780307852
DOI	10.1109/IEMBS.1992.5761144
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-10-29
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrodes Heart Muscles Microscopy Extracellular Electric potential Wire
Content Type	Text
Resource Type	Article

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