Conference proceeding
On optimal defibrillating pulse synthesis
Proceedings of the 2011 American Control Conference, pp 4781-4786
Jun 2011
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
This article proposes a control framework suitable to study the synthesis of electrical signals that bring a flbrillating heart to a nominal (deflbrillated) state so that regular, autonomous cardiac activity resumes. A parallel resistor/capacitor (single RC-circuit) and energy source has been used for over 70 years to describe the heart's deflbrillated state as a condition of reaching nominal threshold potential values represented by the capacitor voltage. The bidomain model adopted in the 1990's was an improvement as it provided 2D and 3D continuum models of cardiac tissue enabling significant advances in modeling electrical cardiac activity. We have spatially discretized a version of the bidomain equations so that the temporal behavior of the transmembrane potential at a point is deduced from an infinite number of first-order differential equations. The connection to a network of RC-circuits is logical and creates opportunities for theoretical and practical modeling and control contributions. A strategy that minimizes a weighted time/energy cost for the single RC-circuit was applied to a multi-RC model. The proposed pulse is agile and energy conscientious thus outperforming the pulse developed to minimize energy consumption alone. The results can also be used to formalize ad-hoc reports that explore the time-energy tradeoff in other defibrillating pulse candidates. In addition, the multi-RC circuit may be used to explore cardiac tissue recovery and multi-path defibrillation. A minimum-time strategy is proposed for the multi-RC circuit to address fast capacitor discharge requirements. These efforts suggest new waveforms to potentially innovate defibrillator design using feedback control.
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Details
- Title
- On optimal defibrillating pulse synthesis
- Creators
- Enrique Barbieri - University of HoustonJohn F. Eberth - University of HoustonFarrokh Attarzadeh - University of Houston
- Publication Details
- Proceedings of the 2011 American Control Conference, pp 4781-4786
- Publisher
- IEEE
- Number of pages
- 6
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000295376005114
- Scopus ID
- 2-s2.0-80053163472
- Other Identifier
- 991021902596104721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Automation & Control Systems
- Engineering, Electrical & Electronic