Abstract:

Objective To develop a shared emergency network platform for patients with out-of-hospital cardiac arrest（OHCA） and evaluate its usability，so as to provide a reference for further improving the emergency efficiency of OHCA patients. Methods Based on the concept of co-design，a preliminary framework for the shared emergency network platform for OHCA patients was constructed through literature review and semi-structured interviews. The Delphi method was used to conduct 2 rounds of correspondence with 28 experts to refine the framework. Finally，the shared emergency network platform for OHCA patients was developed. From December 2024 to January 2025，the Chinese version of the Standalone mHealth Apps Usability Questionnaire for Standalone mHealth Apps-Patient Version was used to survey the platform’s usability among 45 users in Zunyi City，and semi-structured interviews were conducted with 11 users to understand their experience with the platform. Results The effective response rates for the 2 rounds of expert correspondences were 93.3% and 89.3%，respectively. The expert authority coefficients were 0.93 and 0.94，and the Kendall’s coefficients were 0.180 and 0.194，respectively（all P<0.05）. The developed OHCA shared emergency network platform module content included 6 first-level indicators and 26 second-level indicators，and 6 core functional modules were developed. For the usability evaluation，41 valid questionnaires were finally included，with an effective response rate of 91.1%. The mean total questionnaire score was（6.16 ± 0.59）. Users’ experiences with the platform yielded 3 themes，namely innovative functionality with high acceptability，strong practicality and professional content，and suggestions for future promotion and improvement. Conclusion The design and functions of the developed OHCA shared emergency network platform align with public emergency call needs and demonstrate good usability.

Key words: Out-of-Hospital Cardiac Arrest, Cardiopulmonary Resuscitation, First Responder, Mobile Application, Emergency Nursing

摘要：

目的 开发院外心搏骤停（out-of-hospital cardiac arrest，OHCA）患者共享急救网络平台并进行可用性评价，为进一步提高OHCA患者的急救效率提供依据。方法 基于共同设计理念，通过文献回顾和半结构式访谈，构建OHCA患者共享急救网络平台初步框架，采用德尔菲法对28名专家进行2轮函询以完善框架内容，最终开发OHCA患者共享急救网络平台。于2024年12月—2025年1月采用汉化版独立式移动医疗应用程序可用性问卷对遵义市45名用户进行平台的可用性评价调查，并对11名用户进行半结构式访谈以了解平台的使用感受。结果 2轮专家函询的有效问卷回收率分别为93.3%和89.3%，专家的权威系数分别为0.93和0.94，肯德尔和谐系数分别为0.180和0.194（均P<0.05），开发的OHCA患者共享急救网络平台模块内容体系包含6项一级指标、26项二级指标，开发了6个核心功能模块。可用性评价最终纳入41份有效问卷，有效问卷回收率为91.1%，问卷均分为（6.16±0.59）分。用户对平台的使用感受共提炼出3个主题，即功能新颖，易于接受；实用性强，内容专业；后续推广及改进意见。结论 OHCA患者共享急救网络平台的设计和功能契合公众呼救需求，可用性良好。

关键词: 院外心搏骤停, 心肺复苏, 第一目击者, 移动应用程序, 急救护理