A smartphone application for dispatch of lay responders to out-of-hospital cardiac arrests

作者：Berglund Ellinor; Claesson Andreas; Nordberg Per; Djarv Therese; Lundgren Peter; Folke Fredrik; For**erg Sune; Riva Gabriel; Ringh Mattias^*

来源：Resuscitation, 2018, 126: 160-165.

DOI：10.1016/j.resuscitation.2018.01.039

• Out-of-hospital cardiac arrest
• OHCA
• Cardiopulmonary resuscitation
• CPR
• Bystander
• Lay responder
• Laymen/women
• Automated external defibrillator
• AED
• Mobile phone
• Smartphone
• Application
• App
• Location-based services
• LBS
• GPS

Background: Dispatch of lay volunteers trained in cardiopulmonary resuscitation (CPR) and equipped with automated external defibrillators (AEDs) may improve survival in cases of out-of-hospital cardiac arrest (OHCA). The aim of this study was to investigate the functionality and performance of a smartphone application for locating and alerting nearby trained laymen/women in cases of OHCA.
Methods: A system using a smartphone application activated by Emergency Dispatch Centres was used to locate and alert laymen/women to nearby suspected OHCAs. Lay responders were instructed either to perform CPR or collect a nearby AED. An online survey was carried out among the responders.
Results: From February to August 2016, the system was activated in 685 cases of suspected OHCA. Among these, 224 cases were Emergency Medical Services (EMSs)-treated OHCAs (33%). EMS-witnessed cases (n = 11) and cases with missing survey data (n = 15) were excluded. In the remaining 198 OHCAs, lay responders arrived at the scene in 116 cases (58%), and prior to EMSs in 51 cases (26%). An AED was attached in 17 cases (9%) and 4 (2%) were defibrillated. Lay responders performed CPR in 54 cases (27%). Median distance to the OHCA was 560m (IQR 332-860 m), and 1280m (IQR 748-1776 m) via AED pick-up. The survey-answering rate was 82%.
Conclusion: A smartphone application can be used to alert CPR-trained lay volunteers to OHCAs for CPR. Further improvements are needed to shorten the time to defibrillation before EMS arrival.

• 出版日期2018-5
• 单位河北医科大学