Abstract 150: AED Transportation System With Smartphone Application Cooperating With Dispatch Center

Abstract

Background: Although public access automated external defibrillators (AEDs) have been widely installed in Japan, defibrillation by public access AEDs was still rare. Methods: Study design: Case series. We developed an AED transportation system with smartphone application cooperating with dispatch center. When a cardiac arrest occurs and lay-person call the emergency service, the dispatcher share information of out-of-hospital cardiac arrest OHCA locations and near-by AEDs via the application with pre-registered volunteers near the victim. This application presents the shortest route to the OHCA scene via nearby AED, and the volunteers bring AED to the OHCA scene. The purpose of this study is to use this system in real settings and to make the task of the system clear. We conducted the experimental study in Owariasahi city, Aichi and Kashiwa city, Chiba. Research period were from January 2017 to March 2019 in Owariasahi city, and from December 2018 to March 2019 in Kashiwa city. We collected the number of registered volunteers, the timeline data of system activation, and the number of responses to occurrence of OHCA by registered volunteers during the study period. Results: In Owariasahi city, total of 304 volunteers were registered. 276 suspected OHCAs occurred, 179 cases were eligible excluding the hazardous cases in the scene, and of which 169 cases actually activated the system by the dispatcher. The average time from call to send notification was 3:11 (minutes and seconds) and from call to emergency medical service (EMS) arrival 6:37 (minutes and seconds). The registered volunteer took actions in 94/169 cases (55.6%), transported AEDs in 6 cases, and arrived on the scene in 10 cases. A registered volunteer arrived on the scene earlier than EMS personnel in one case. In Kashiwa city, total of 636 volunteers were registered, and the system was activated in 17 suspected OHCA cases. In one case, a volunteer arrived earlier than EMS and attempted resuscitation. Conclusions: This AED transportation system worked well and safe on the actual emergency scene. By increasing the number of registered volunteers, it is expected to increase the number of AED use.