Comparison of 105 μF VS 120 μF Capacitor for External Defibrillation

초록

Sudden cardiac arrest is steeply increasing in a human population, despite rapid development in diagnostic tools in cardiac rhythm disturbance. The defibrillator is developed to control and manage such conduction rhythm abnormalities, non-medically. The efficacy of external defibrillation can be affected by multiple factors, including capacitor size accommodated in defibrillator. Despite rapid improvement in external defibrillators, there are disputes about optimal size of capacitor for defibrillation. Therefore, in this study, we tested small (105 mu F) and standard (120 mu F) size capacitors for defibrillation efficacy with a porcine model, to identify optimal size of capacitor for external defibrillator. Our study found that there was no significant difference in the waveforms (the voltage and duration in phase I and 2) in different setting of energy (50, 70, 100, 150 and 200 J). Furthermore, any statistical significant difference in defibrillation efficacy has not been observed in a short-term VF and long-term VF with defibrillator accommodating different size of capacitor. Our study implies that smaller difference in capacitor size may not affect the overall defibrillation efficacy.

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