Conclusions
In this study, we developed an innovative team-based tele-instruction tool and assessed its effectiveness in ensuring the delivery of high-quality CPR. This tool facilitated the efficient organization of resuscitation teams, promoted effective cooperation, and enhanced compression quality among multiple lay responders. Consequently, we propose that the efficacy and applicability of the team-based tele-instruction tool should be evaluated in the telehealth emergency service systems to enhance resuscitation outcomes in real-life rescue scenarios.The authors would like to thank all participants for their time and active involvement in this study. We also acknowledge Mr Fang Ding, Pan Yang, Chaolun Gao, and Yuexiang Xiong for their support and valuable comments on the protocol.This work was supported by the National Natural Science Foundation of China (grant number 72074144), the Laerdal Foundation (grant number 2022-0133), and the Innovative Research Team of High-Level Local Universities in Shanghai (grant number SHSMU-ZDCX20212801).Conflicts of Interest: None declared.