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Architectural approaches for HL7-based health information systems implementation.
1eHealth Competence Center, Regensburg University Hospital, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany. dmlopez@unicauca.edu.co
Methods of Information in Medicine
|March 10, 2010
Summary
Health Information Systems Development Framework (HIS-DF) and HL7 standards enable seamless health information systems integration. The mediator model, supported by HL7 v3 and HIS-DF, offers a promising approach for developing interoperable healthcare systems.
Area of Science:
- Health Informatics
- Information Systems Engineering
Background:
- Health information systems integration presents significant challenges, particularly concerning semantic and business process interoperability.
- A unified methodology encompassing various architectural viewpoints is crucial for successful systems integration.
Purpose of the Study:
- To analyze and demonstrate how the Health Level Seven (HL7) standard set can facilitate health information systems integration.
- To evaluate common architectural models for health information systems integration using the Health Information Systems Development Framework (HIS-DF).
Main Methods:
- Analysis of three architectural models: point-to-point, message server, and mediator.
- Evaluation of HL7 versions 2 and 3 messaging capabilities for supporting these models.
- Demonstration using a proof-of-concept public health surveillance system built with Enterprise Java Beans technology.
Main Results:
- HL7 versions 2 and 3 effectively support point-to-point and message server integration models.
- The HL7 v3 standard, coupled with HIS-DF's service-oriented and model-driven approaches, enables the mediator integration model.
- A proof-of-concept implementation validated the integration scenarios.
Conclusions:
- The Health Information Systems Development Framework (HIS-DF) offers a methodological approach for healthcare integration projects.
- The mediator model, supported by HIS-DF and HL7 v3, is highly promising for developing open, reusable, and semantically interoperable health information systems.
- Standard-based, platform-independent, and service-oriented architectures are key for future healthcare systems.
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