1. bodily feature of a patient
Tentative mapping
OGMS
OpenEHR
representation
processual_entity
clinical finding
clinical history taking
OBS.story
clinical history
OBS.story
Laboratory
test
CLU.specimen_preparation
image finding
OBS.imaging
OBS.lab_test
clinical picture
physical examination
CLU.exam
laboratory finding
CLU. specimen
CLU.inspection
OBS.lab_test
bodily feature of a patient
preclinical finding
sign
diagnosis
EVAL.diagnosis
vital sign
SEC.vital_signs
EVAL.problem
symptom
CLU.symptom
CLU.symptom_pain
CLU.issue
CLU.event

2. OGMS integration approaches
1. OGMS - AM mappings (ambiguity, incompleteness)
2. Including OGMS terms as RM classes
3. Defining a new AM layer RM AM
Pulse
Medication order
OGMS
OpenEHR
Disease core AM
Particular
archetypes
Body Temperature
Blood Pressure
Pregnancy

3. Translation from ADL to OWL
archetype definition
Observation
data
Event Series
events
Event_T
data
data
Norton scale
data
events
Item List
Event Series
items
events
data
Element
Status
transition
data
items
List
items
Terminology
General Physical
Status

4. Ontology bindings
The term_binding section stores bindings between a particular term within the archetype and an equivalent concept in an ontology

5. Equivalence relations
Blood Pressure Arquetype
Physiology ontology
By linking the classes through a Necesary & Suficient condition we allow a reasoner to check data correctness and data coherence while preserves the ontology modularity during its exploitation.

6. Enriched archetypes
The Systolic pressure concept, defined in the archetype, is enriched with properties and attributes from the equivalent class within the Physiology ontology

7. Workflow (Translation+ Mapping + Inference)
SNOMED
Reference Model
Archetype
Ontologizer 1 3
ADL
Archetype 2
Instance
Mapper
pat.
data
risk
data
data_norton_ mdb
data_norton_ _result.mdb

8. Currently a module within the OpenEHR Java Reference Implementation Project

9. Conclusions
The Archetype Model should be improved in order to prevent concept overlapping.
Existing archetypes cover several concepts of the OGMS ontology, although some ambiguities have been revealed.
Three mapping approaches were presented for the integration of the OGMS ontology :
AM – OGMS, direct mapping.
Definition of the OGMS as a part of the Reference Model
Creation of a Disease layer between the RM and the AM
The translation from ADL to OWL offers several advantages for reusability, coherence checks and navigability between archetypes and clinical ontologies.