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Passive electrode effect reduces defibrillation threshold in bi-filament middle cardiac vein defibrillation

Paisey, John R., Yue, Arthur M., Bessoule, Frederick, Roberts, Paul R. and Morgan, John M. (2006) Passive electrode effect reduces defibrillation threshold in bi-filament middle cardiac vein defibrillation Europace, 8, (2), pp. 113-117. (doi:10.1093/europace/euj034).

Record type: Article

Abstract

AIMS: To investigate whether a passive electrode effect decreases defibrillation threshold (DFT) in multi-filament middle cardiac vein (MCV) defibrillation.
METHODS AND RESULTS: Twelve pigs underwent active housing (AH) insertion, with defibrillation coils placed transvenously in right ventricular apex and superior vena cava. The MCV was cannulated, and 1.12F, 50 mm coil electrodes (Ela Medical SA, France) were deployed in its right and left branches. Lead placement was possible in 11 of 12 animals. DFT (J, mean +/- SD) was determined by three-reversal binary search and compared between the MCV monofilament (single filament deployed) and the AH (25.9 +/- 10.9) and the MCV mono + passive filaments (both filaments deployed, one connected) and the AH (19.9 +/- 11.4); 24% DFT reduction P = 0.008. CONCLUSION: A bystander electrode adjacent to a monofilament electrode in the MCV reduces DFT by 24% when compared with monofilament MCV alone. Microfilament electrodes decrease DFT as auxiliary anode but not as sole anode.

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More information

Published date: 2006
Keywords: methods, defibrillators, research, adverse effects, electrodes, electric countershock, equipment failure, therapy, implanted, electric impedance, instrumentation, hospitals, female, implantable, swine, animals, equipment design, ventricular fibrillation, coronary vessels, physiopathology

Identifiers

Local EPrints ID: 61419
URI: http://eprints.soton.ac.uk/id/eprint/61419
ISSN: 1099-5129
PURE UUID: bdf72837-023f-454d-9126-baf8b398e5be

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Date deposited: 08 Sep 2008
Last modified: 17 Jul 2017 14:22

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Contributors

Author: John R. Paisey
Author: Arthur M. Yue
Author: Frederick Bessoule
Author: Paul R. Roberts
Author: John M. Morgan

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