Proposal of a Low Cost Prototype Energy Measurement of Defibrillators with Impedance Variator

In the following work an alternative prototype was developed to measure the energy discharge in external defibrillators, unlike the conventional defibrillator analyzers where the energy discharge is performed with a fixed impedance of 50 Ω, this prototype proposes to perform the energy discharges of any external defibrillator and will have a variable impedance module at an affordable price. To verify that the prototype makes precise measurements, two external defibrillators of the same model were evaluated, and compared with a gold standard Phase 3, making five discharges of each defibrillator in three different energy intervals, and thus validate the proposed prototype, and according to the obtained results it was demonstrated that this prototype is reliable since by means of the Bland-Altman method it was proved that the prototype is accurate and that there is agreement between the two measuring instruments used. This prototype seeks to be an alternative measurement of cardiac resuscitation equipment, for health institutions that do not have the resources to purchase expensive equipment.