Flexible and Extensible Display of Archetyped Data: The OpenEHR Presentation Challenge
Lisa M Thurston · 2006
EHR systems following the openEHR approach are based on archetypes, which allow data models to be infinitely flexible within the constraints of the openEHR reference model. This unpredictability of the data model for a health record is the central challenge to displaying openEHR EHRs. This paper describes an approach to displaying archetyped EHR data that which takes into account pre-existing needs for health record display technology as well as the trend towards life-long EHRs and culture-neutral EHR systems. Display logic models correspond to the eleven categories of openEHR archetypes are created. Using this minimum set of display logic, any openEHR EHR is displayable regardless of the archetypes constraining and defining the data. Per-archetype and/or per-context display logic may be added to the minimum set to gain more control over the rendering of openEHR EHRs. This approach is implemented in a case study which defines the display models in XSLT excerpts corresponding to archetype categories and specific archetypes. The approach relied on consuming the EHR data in XML instances of openEHR compositions.