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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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)
|Deposited By:||Professor Omar Escalona|
|Deposited On:||18 Jan 2010 10:36|
|Last Modified:||28 Jun 2011 11:16|
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