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Towards an Event-Condition-Action (ECA)-Based Formalization of Clinical Guidelines
Marcel Ebbinghaus1, Bora Gashi2, Martin Boeker2
1University of Freiburg, Freiburg im Breisgau, Germany.
Studies in Health Technology and Informatics
|July 3, 2026
Summary
Formalizing clinical practice guidelines (CGs) is challenging. A new Event-Condition-Action (ECA) formalism offers a clear, consistent, and usable approach for computable medical knowledge representation.
Area of Science:
- Medical Informatics
- Computer Science
Background:
- Existing computable medical knowledge representations like Arden Syntax and Asbru face challenges in formalizing clinical practice guidelines (CGs).
- Clear, consistent, and usable logic for CG recommendations remains a significant hurdle.
Purpose of the Study:
- To propose a novel pre-structuring formalism for CGs based on the Event-Condition-Action (ECA) paradigm.
- To demonstrate the applicability of the ECA formalism to real-world clinical scenarios.
- To map the proposed ECA formalism to existing systems like Arden Syntax and Asbru.
Main Methods:
- Developed a pre-structuring formalism utilizing the Event-Condition-Action (ECA) model.
- Applied the ECA formalism to practical examples of clinical practice guidelines.
- Mapped the ECA formalism to Arden Syntax and Asbru for interoperability.
Main Results:
- The proposed ECA-based formalism provides a semantically coherent foundation for CGs.
- Demonstrated the practical applicability of the ECA formalism in real-world settings.
- The formalism aligns well with the structural elements of other established guideline representations.
Conclusions:
- The Event-Condition-Action (ECA) formalism presents a viable solution for the challenges in representing clinical practice guidelines.
- This approach enhances clarity, consistency, and usability in computable medical knowledge.
- The ECA formalism offers a foundation compatible with existing knowledge representation systems.
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