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Towards impedance optimised transcutaneous atrial defibrillation

Walsh, PR, Rodrigues, PA, Goodfellow, J, Waterman, N, McEneaney, DJ and Escalona, OJ (2014) Towards impedance optimised transcutaneous atrial defibrillation. In: Computing in Cardiology 2014, Cambridge, MA, USA. IEEE. Vol 41 (1) 4 pp. [Conference contribution]

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URL: http://toc.proceedings.com/25449webtoc.pdf

Abstract

Impedance compensated transcutaneous atrial defibrillation may offer more cost effective and less painful treatment for patients with AF by facilitating arrhythmia detection and low-energy synchronized cardioversion in a non-acute care setting. However, the technological barriers to implementation remain significant. In this paper advancements towards the realization of an impedance compensated passive transcutaneous atrial defibrillator architecture are reported: high power transcutaneous inductive link for defibrillation energy transfer, low-power electrocardiogram and impedance sensing for AF detection and optimised cardioversion management via an embedded microcontroller with RF communications link for overall system control. The transcutaneous inductive link has been reliably operated in two distinct modes; ‘sense mode' offers a >5W continuous power transfer mode to enable AF-ECG processing and intracardiac impedance measurement prior to cardioversion while `shock mode' facilitates the transcutaneous coupling of >150W during delivery of an impedance compensated rectilinear defibrillation shock waveform to the heart. Laboratory bench test and experimental results are presented to demonstrate proof of concept.

Item Type:Conference contribution (Paper)
Keywords:Defibrillators; AF; atrial fibrillation; heart diseases; electric impedance; electrocardiography; ECG; medical signal processing; microcontrollers; cardioversion optimisation; telemedicine; AF-ECG processing; RF communications link.
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:31862
Deposited By: Professor Omar Escalona
Deposited On:26 Nov 2015 12:44
Last Modified:26 Nov 2015 12:44

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