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Introduction-and-RDF-Representation-of-FHIR-for-Clinical-Data

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Our speaker, Joshua Mandel, will provide a lightning tour of Fast Healthcare Interoperability Resources (FHIR), an emerging clinical data standard, with a focus on its resource-oriented approach, and a discussion of how FHIR intersects with the Semantic Web. We'll look at how FHIR represents links between entities; how FHIR represents concepts from standards-based vocabularies; and how a set of FHIR instance data can be represented in RDF.

Publié dans : Santé
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Introduction-and-RDF-Representation-of-FHIR-for-Clinical-Data

  1. 1. Clinical data in FHIR Intro & RDF representation Josh Mandel, MD SemanticWeb.com December 12, 2014
  2. 2. What's the problem? Healthcare workflows: referrals and transitions of care patient communications quality improvement clinical trial eligibility → need accessible data to flow
  3. 3. What is FHIR? Draft standard within HL7 Open standard (→ CC0) Resources, Datatypes, Value Sets ("80/20") REST API High conceptual alignment with sem web... But vis-à-vis RDF, FHIR "reinvents" quite a bit.
  4. 4. What is FHIR? Resources 50+ "atomic" structures
  5. 5. What is FHIR? Datatypes (Common structures for core meaning)
  6. 6. e.g. GET All patients named "amy" /Patient?name=amy All combined systolic+diastolic measurements /Observation?name:text=systolic+and+diastolic /Observation?name=55284-4 /Observation?name=http://loinc.org|55284-4 What is FHIR? REST API
  7. 7. Chaining "All blood pressures from females" /Observation?name=55284-4& subject:Patient.gender=F Inclusion paths "BP measurements with their component parts" /Observation?name=55284-4& _include=Observation.related.target What is FHIR? REST API
  8. 8. What is FHIR? Profiles ("Meta" models used to describe resources)
  9. 9. Not required for individual patient data… But a consistent way to host vocabs Live demo What is FHIR? ValueSet
  10. 10. 80/20 principle for "core" So everything is extensible (even primitives!) "extension" vs. "modifierExtension" "Note that, unlike in many other specifications, there can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core simplicity for everyone." What is FHIR? Extensibility
  11. 11. Data and reference material in one place Rich query environment Automated reasoning ● Clinical care ● Research ● Data quality analysis FHIR in RDF. Why?
  12. 12. CodeableConcept → Coding <name> <coding> <system value="http://loinc.org"/> <code value="55284-4"/> <display value="Blood pressure systolic and diastolic"/> </coding> </name> FHIR in RDF. URIs
  13. 13. CodeableConcept → Coding <name> <text>BP</text> <coding> <system value="http://loinc.org"/> <code value="55284-4"/> <display value="Blood pressure systolic and diastolic"/> </coding> </name> FHIR in RDF. URIs http://loinc.org|55284-4
  14. 14. <birthDate value="1982-10-26"/> Could express as _:me fhirPatient:birthDate "1982-10-26". FHIR in RDF. Dates, strings, etc. <birthDate value="1982-10-26"> <extension url="http://myvocab/with-days"> <valueInteger="5"/> </extension </birthDate>
  15. 15. Explicit relations modeled… and extensible FHIR in RDF. Relations <Observation> <subject value="Patient/123"> </Observation> _:bp [ a fhir:Observation Observation:subject [ a fhir:Reference; Reference:reference <Patient/123> ] ].
  16. 16. Generate automated, simple transformations Transparent syntactic manipulation Verbose but comprehensive FHIR in RDF. "Idiomatic RDF"? → Eventually we need ● idiomatic RDF ● readable ontology ● some automated reasoning

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