Introduction
death, Sudden cardiac arrest, OHCA, cardiac arrest, T-CPRThe, chest compression
CARDIAC ARREST
Sudden cardiac arrest is a major public health problem worldwide and it is one of the leading causes of death in industrialized countriesIn the majority of the cases, the bystanders who call the ambulance are laypeople, for whom the identification of OHCA is difficult without experience. Therefore, EMS dispatchers play an important role to recognize cardiac arrest and give help to the lay first responder via telephone CPR (T-CPR) which improves survival ratesThe current technology allows the live video connection between the scene and the dispatcher which provides the opportunity for video-assisted CPR (V-CPR). In some prior studies, V-CPR showed higher efficacy in some aspects of chest compressions than T-CPRThe aim of this study was to compare the CPR quality (chest compression depth and rate, hand position), the CPR-related time intervals (time of check the breathing, time to call the ambulance, time to the first chest compression), and the attitude and self-assessment of lay responders comparing unassisted CPR (U-CPR), T-CPR and V-CPR. We hypothesized that the quality and effectiveness of the V-CPR method are superior to the quality of U-CPR and T-CPR in a simulation setting.