Abstract
BackgroundCardiorespiratory arrest (CRA) is a health emergency with high mortality. Mortality depends on time of initiation and quality of cardiopulmonary resuscitation (CPR) manoeuvres and the use of the automated external defibrillator (AED).MethodsThe aim of the study is to determine the effectiveness of an automatically activated network of volunteers using smartwatch and smartphone applications on the reduction of time of initiation of cardiopulmonary resuscitation manoeuvres. The protocol will be developed in four phases: 1) validation of an application (App) for smartwatch that automatically generates a health alert in case of out-of-hospital cardiorespiratory arrest (OHCA); 2) training course for laypersons on CPR manoeuvres and AED use; 3) creation of a network of volunteers trained in CPR and AED use that covers our city; and 4) simulation in which the network of volunteers is automatically activated via smartphone to attend simulated OHCAs. A total of 134 health alerts will be generated; on 67 occasions the alert will be directed to the emergency health services and to the network of trained volunteers (Intervention Group) and on 67 occasions the alert will be solely directed to the emergency health services (Control Group). The arrival time of the first rescuer, category of first rescuer (emergency services versus network of volunteers), initiation time of manoeuvres and competence will be recorded.DiscussionCPR training for laypersons is advised, especially for relatives and people close to patients with heart disease, to reduce time of initiation of CPR and to improve OHCA survival rates. This study aims to verify that the initiation time of CPR manoeuvres and AED use is shorter in the intervention than in the control group.Trial registrationClinicaltrials.gov ID NCT03828305. Trial registered on February 1, 2019 (retrospective register).
Highlights
Cardiorespiratory arrest (CRA) is a health emergency with high mortality
The chain of survival is a series of sequential actions aimed at increasing the survival of CRA victims
The main cause of of-hospital cardiorespiratory arrest (OHCA) is ventricular fibrillation (VF) and its treatment consists of defibrillation using an automated external defibrillator (AED)
Summary
Mortality depends on time of initiation and quality of cardiopulmonary resuscitation (CPR) manoeuvres and the use of the automated external defibrillator (AED). Sudden death due to cardiorespiratory arrest (CRA) causes more than 30,000 deaths per year in Spain [1] Many of these deaths occur in public spaces in the presence of other people. The chain of survival is a series of sequential actions aimed at increasing the survival of CRA victims It consists of the following 5 steps [3]: a) early recognition and activation of emergency medical services (EMS); b) Immediate high quality cardiopulmonary resuscitation (CPR) by CRA witnesses; c) Rapid defibrillation by automated external defibrillator (AED); d) Basic and advanced emergency medical services; and e) post-CPR cures. The response interval between the call to EMS and their arrival is usually greater than 8 min [6]
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