Time to defibrillation: a controlled laboratory study comparing three automated and semi-automated defibrillators.
Currently there are three vendors marketing first-responder defibrillation units. Each vendor's unit has its own distinct features, advantages, and disadvantages, making the selection of one vendor's unit a complex decision. However, two critical performance criteria upon which a decision to choose one vendor's unit over another could be 1) differences in dysrhythmia recognition sensitivity and specificity and 2) time to delivery of a defibrillation shock. While there appears to be evidence suggesting no significant differences between the three units in terms of dysrhythmia recognition, there do not appear to be any controlled 'time-to-defibrillation' studies. The purpose of this study was to determine if, under controlled conditions, any performance differences existed between these three units in time to delivery of a defibrillation shock. The results of this study suggest that there are no pragmatic differences between the three defibrillation units. In the absence of time-to-defibrillation differences, EMS systems managers can place more emphasis on other features so as to better address the needs, concerns, and resources of their system.
Papa
F J
FJ
Division of Emergency Medicine, Texas College of Osteopathic Medicine, Fort Worth 76107-2690.
D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000628:therapy; D004554:Electric Countershock / Q000295:instrumentation* / Q000401:mortality / Q000592:standards; D004632:Emergency Medical Services; D006801:Humans; D008020:Life Support Care; D012680:Sensitivity and Specificity; D013997:Time Factors