目的 评估在城市医疗集团模式下，于医院就诊人群中实施基于单导联心房颤动（房颤）检测棒的机会性房颤筛查的长期成本效益。方法 基于经广州市本地流行病学数据校准的Markov模型，比较未筛查与基于单导联房颤检测棒的不同筛查频率（季度、半年、年度）的机会性筛查策略，从卫生服务提供方视角评估成本与质量调整生命年（QALY），计算增量净货币收益（INMB）与成本效果比（ICER），并进行概率及情景敏感性分析。结果 所构建的房颤模型具有良好的预测效度。在基线假设下，季度筛查策略表现最优，相较未筛查组可增加0.525 5个QALY，节省成本15?626.61元，INMB为85 312.14元。敏感性分析显示，抗凝治疗依从性对成本效益影响最大。情景分析中，不同灵敏度与特异度假设未改变最优策略结论。结论 在城市医疗集团情境下，针对65岁及以上就诊老年人群的基于单导联房颤检测棒的季度机会性房颤筛查具备稳健的成本效益。结合分级诊疗体系和全流程管理，以依从性管理作为干预重点，能够最大化卒中预防收益并提高资源配置效率。

      Objective To evaluate the long-term cost-effectiveness of opportunistic atrial fibrillation（AF）screening using a single-lead handheld ECG device among hospital-attending adults within an urban medical consortium．Methods No screening and opportunistic screening at different frequencies（quarterly，semiannual，and annual）were compared by a Markov model calibrated to Guangzhou-specific epidemiological data．From the healthcare provider perspective，we estimated costs and quality-adjusted life-years（QALYs），calculated incremental net monetary benefit（INMB）and incremental cost-effectiveness ratio（ICER），and performed probabilistic and scenario sensitivity analyses．Results The AF model demonstrated good predictive validity．Under the baseline scenario，quarterly screening was the optimal strategy，yielding a gain of 0.525 5 QALYs，cost savings of CNY 15 626.61，and an INMB of CNY 85 312.14 versus no screening．Sensitivity analyses indicated that adherence to anticoagulation had the greatest impact on cost-effectiveness．Scenario analyses varying diagnostic sensitivity and specificity did not change the conclusion regarding the optimal strategy．Conclusions In the context of an urban medical consortium，quarterly opportunistic AF screening based on a single-lead handheld ECG device for hospital-attending adults aged ≥65 years is robustly cost-effective．Integrating screening into tiered care with end-to-end management，while prioritizing adherence management，can maximize stroke-prevention benefits and improve resource allocation efficiency．

       目的   通过总结分析我国华东五省市紧密型城市医疗集团的实践经验，为全面推进紧密型城市医疗集团建设，促进区域内医疗资源的优化整合和高效利用提供借鉴和参考。方法   采用内容分析法从责权协同、资源协同、业务协同和机制协同四个维度对上海闵行、浙江湖州、江苏淮安、安徽铜陵、山东青岛五个紧密型医疗集团建设的实践经验进行梳理和对比分析。结果   各地区医疗集团建设总体具备政府主导，集团共建，一体化管理、同质化服务等紧密型医疗集团特点，但存在权责归属失配、利益分配机制缺失、信息化建设不均衡、基层服务能力不足、一体化管理不全面、机制协同有待加强等问题。结论   建议通过完善治理体系、均衡利益分配、强化数字赋能、推进强基提能、落实配套政策等措施，切实推动紧密型城市医疗集团高质量发展。

       Objective  To  summarize  and  analyze the  practical  experience  of  compact  city medical  groups in five provinces and cities in East China，for reference of promoting the construction of compact city medical groups，and promoting the optimization，integration and efficient utilization of medical resources in the region．Methods  The content analysis method was used to sort out and compare the practical experience of building such compact medical groups in Shanghai Minhang，Zhejiang Huzhou，Jiangsu Huai’an，Anhui Tongling and Shandong Qingdao from the four dimensions of responsibility and power synergy，resource synergy，business synergy and mechanism synergy．Results  Such medical groups are characterized by government-led，group co-construction，integrated management，and homogeneous services．However，there are such problems as mismatched ownership of rights and responsibilities，lack of interest distribution mechanism，unbalanced information construction，insufficient primary service capacity，incomplete integrated management，and mechanism coordination to be strengthened．Conclusions  It is recommended to effectively promote the high-quality development of compact city medical groups by improving the governance system，balancing the distribution of interests，strengthening digital empowerment，promoting the strengthening of energy，and implementing supporting policies．