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Radio-frequency powered atrial defibrillation with a biphasic rectangular pulse waveform: a safety study at 3 and 5 Jouls

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Escalona, OJ, Walsh, SJ, Allen, JD, Anderson, JMCC and Adgey, AAJ (2004) Radio-frequency powered atrial defibrillation with a biphasic rectangular pulse waveform: a safety study at 3 and 5 Jouls. In: ICCDCS 2004: Fifth International Caracas Conference on Devices, Circuits and Systems, Punta Cana, Dominican Republic. UNSPECIFIED. 6 pp. [Conference contribution]

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Abstract

A novel device for transvenous atrial defibrillation with a biphasic rectangular pulse waveform, with instant power supplied through a radio-frequency energy-transfer link in a short air gap of up to 18 mm, has been investigated and is briefly described here. Previous waveform assessments, have suggested that a biphasic and asymmetric (second phase at 50% amplitude) pulse waveform of energy discharge is of particular clinical interest. Hence, a safety study upon the haemodynamic effects of such a novel waveform for atrial defibrillation, was carried out on 6 animal models (pigs), at energy levels of 3 3 and 5 J. The results demonstrated relatively small and reversible effects on the haemodynamics and the novel waveform was comparable in effect to a conventional, capacitor-based (with RC exponential decay), biphasic waveform. Also, an assessment of the device output performance for various air gap distances is presented.

Item Type:Conference contribution (Paper)
Keywords:Cardioversion, atrial fibrillation, RF coupled coils, wireless power delivery, low-tilt waveform cardioversion, transdermal atrial defibrillation.
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:6081
Deposited By:Professor Omar Escalona
Deposited On:18 Jan 2010 10:36
Last Modified:28 Jun 2011 11:16

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