Expert Consultation
Expert consultations were conducted to enhance the clarity and efficiency of instructing the caller on the required actions and procedures while also ensuring that the protocol remained scientifically sound, logical, and feasible. Interviews were conducted to address 3 aspects of the protocol: interior logic verification, exterior contrast analysis, and generalizability analysis. The 4 experts involved in the study were experienced specialists in the fields of emergency medical services and T-CPR dispatch protocol. They can play a substantial role in supervising the team-based T-CPR instruction protocol and participating in the development of the tool promotion plan in China.