The First Affiliated Hospital of Sun Yat-sen University, was the first case in China of IT system renovation by implementing an HIE platform compliant with international health IT standards and technical framework. By deploying HIE platform and connecting heterogeneous systems, the renovation achieved the patient-centered EHR information integration and sharing, provided with timely, high-quality data for daily clinical practices, scientific research, service quality management, personnel performance evaluation, etc. From the project management and IT construction points of view, the EMR platform with interoperability has the advantages of manageable project schedule, reasonable cost and little interference with hospital operation due to its minimal invasion into existing systems, decoupling between systems and easy replication of deployment. The HIE product used in the project was developed in compliance with the core syntactic and semantic standards of the industry, following the key function definitions for interoperability and designed similar to the software structure of mainstream HIE products in the market. In comparison to the widely adopted heterogeneous system integration strategies using database and ETL techniques, HIE has the obvious superiority in system stability, timeliness and quality of the data.%中山大学附属第一医院是国内首个采用国际标准和行业技术规范开发HIE平台，进行院内信息化改造的落地案例。通过HIE平台的搭建，接入异构的业务子系统，实现了以病人为中心的电子病历信息的整合和全院共享，为临床业务、临床科研、质量管理、绩效管理等提供实时、高质量的数据共享和各类数据应用。互操作性HIE平台在信息化建设中，因具有对原有系统“侵入”小、系统间解耦、可复制性高的特点，使项目周期可控、建设投入合理，对业务影响小，建设可发展性高。由于HIE平台是采用语法互操作性核心标准、语义互操作性核心标准，按照互操作性核心集成功能规范和国际主流互操作平台架构开发的，相对国内通常采用的数据库加ETL技术实现异构系统集成的模式，在系统稳定性、数据实时、及时性、数据质量上具有无法比拟的优势。
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