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Improving Child Defibrillation Protocols: Research and Innovations

Current medical protocols for defibrillating children under twelve are insufficient due to a lack of research on how electrical currents interact with a child's anatomy and physiology. This project aims to investigate the impact of body size on electrical current distribution, demonstrating unsafe levels of shock when using adult defibrillators. Additionally, the research seeks to redesign defibrillators tailored for children's body sizes. By employing Finite Difference Frequency Domain modeling in MATLAB, we aim to enhance Advanced Life Support (ALS) outcomes for pediatric patients.

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Improving Child Defibrillation Protocols: Research and Innovations

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  1. Child Defibrillation By Todd Braithwaite

  2. Introduction Modern Medicine has not yet created protocols for successfully defibrillating children under twelve years old. There is a lack of research on how electrical currents affect the anatomy and physiology of a child’s body. Adequate research on this subject could improve the outcomes of advanced lifesaving (ALS) measures for children.

  3. Goals - First • Demonstrate effects of body size on current distributions in body • Expect to find dangerous levels in child body with adult shock • Publish findings

  4. Goals - Second • Redesign defibrillator for child body size • Expect to change strength & duration of shock • Publish findings

  5. Cardiac Defibrillation - Basics • Heart controlled by electrical signals • Fibrillation - rapid & irregular beating of the heart • Electrical shock used to restore regular heart beat (defibrillation)

  6. Defibrillation Basics - cont’d • Paddles (electrodes) placed on body • Electrical shock applied • View results • Repeat if necessary Note Too big of a shock will permanently damage the body tissue

  7. Defibrillator • Lifepak 500 Automated External Defibrillator http://www.lifesaving.com/catalog/emsresus.htm

  8. Electrodes

  9. Usage of Defibrillator • Location of Electrodes

  10. My Project • Model current distribution in body • Finite Difference Frequency Domain (FDFD) Modeling • Written in MATLAB

  11. Model of Human Body • No model of child body • Adult body model • Scale to child size

  12. MATLAB • FDFD code written in house • Successive Over Relaxation (SOR) method • Resolution (matrix size) determined by computing power available

  13. MATLAB -cont’d • Results compared against published current patterns

  14. Project Timeline • Working FDFD code - May 1, 2000 • Human model - May 28, 2000 • Preliminary results - June 27, 2000 • Simulations completed - July 30, 2000 • Write up completed - August 15, 2000

  15. Close • Defibrillators designed for adults • Lack of research on defibrillating children • Future design changes in defibrillators

  16. Resources • Dr. Furse • Articles - 2 so far • Web sites - none yet

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