Study of Telephone-assisted CPR Instructions Optimized for AED Use to Improve Chest Compressions and Reduce No-flow Time in Single-Rescuer Cardiac Arrest

What this Trial Is About

Out-of-hospital cardiac arrest OHCA is a leading cause of death worldwide, with survival depending heavily on immediate bystander cardiopulmonary resuscitation CPR. Early recognition, quick chest compressions, and rapid defibrillation are vital for increasing survival chances. This study evaluates how telephone-assisted CPR T-CPR instructions optimized for automated external defibrillator AED use affect no-flow time and chest compression fraction CCF during single-rescuer resuscitation. Participants are randomly assigned to receive either standard T-CPR instructions or enhanced AED-optimized T-CPR instructions. The enhanced instructions focus on minimizing interruptions in chest compressions, reducing the time to the first compression, and improving AED use workflow. Key changes include immediate AED activation, starting compressions during AED voice prompts, continuing compressions during AED preparation and charging, and minimizing pauses before and after shock delivery. Participants perform dispatcher-assisted CPR following European Resuscitation Council guidelines and the respective national protocols. Researchers measure no-flow time, time to first chest compression, time to first shock, chest compression fraction, and peri-shock pause during the procedure. The study is conducted as a prospective, randomized, controlled simulation, with participation lasting during the resuscitation simulation and data collection periods.

Effect of AED-optimized Telephone-assisted CPR Instructions on No-flow Time and Chest Compression Fraction