Hospital Data Sovereignty: The Path to a FHIR-Based Clinical Data Repository

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Modern hospital IT is undergoing a fundamental transformation that goes far beyond merely digitizing paper records. Historically, medical data has often been trapped in isolated 'silos' within individual departments, making comprehensive analysis difficult because related information—such as lab results or medication plans—is scattered across different formats and systems. The CDR (Clinical Data Repository) addresses this challenge by acting as a 'clinical long-term storage,' aggregating data from diverse sources like the KIS, functional departments, and medical devices. Crucially, it adopts the FHIR® standard, ensuring that the format used for internal storage is the same format used for exchange and analysis. This creates an open, structured, and permanent platform, rather than just a temporary transmission path, thereby establishing 'data sovereignty' independent of specific software vendors. This system serves as the foundation for intelligent dashboards—providing doctors and nurses with key parameters at a glance—and clinical decision support systems that issue real-time warnings for conditions like sepsis or medication errors. In essence, the CDR is not merely an archive; it is a strategic infrastructure enabling advanced medical care and research, which is vital for hospitals facing economic pressures.