Huge reduction of defibrillation thresholds using four electrode defibrillators
In the absence of a better solution, ventricular fibril- lation is treated by applying one or several large electri- cal shocks to the patient. The question of how to lower the energy required for a successful shock is still a cur- rent issue in both fundamental research and clinical prac- tice. In...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/116097 |
| Acceso en línea: | https://hdl.handle.net/2117/116097 |
| Access Level: | acceso abierto |
| Palabra clave: | Defibrillators defibrillation thresholds defibrillators Desfibril·ladors Àrees temàtiques de la UPC::Física |
| Sumario: | In the absence of a better solution, ventricular fibril- lation is treated by applying one or several large electri- cal shocks to the patient. The question of how to lower the energy required for a successful shock is still a cur- rent issue in both fundamental research and clinical prac- tice. In the study presented here we will compare defib- rillation applied through a four electrode device with the standard procedure using two electrodes. The method is tested through intensive numerical simulations. Here we have used a one dimensional geometry. At the level of the cardiac tissue, the bidomain and the modified Beeler- Reuter models were used. Three different shock waveforms are tested: monophasic and two types of biphasic shocks. The results are compared with those obtained with stan- dard two electrode device. A significant reduction in de- fibrillation thresholds is achieved for all the three tested waveforms when we use a four electrode device. |
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