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Past Posts
- Why using expressions in workflow is wrong
- A Lingua Franca for e-health takes shape with GraphiteHealth
- The Health IT Platform – a definition
- What is interoperability?
- Directions in clinical guideline programming – CHA2DS2-VASc
- Design-by-Contract (DbC) v Test-Driven Design (TDD)
- Software – from Development to Use and Ownership
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Recent Comments
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- Athanasios Anastasiou on Why using expressions in workflow is wrong
- wolandscat on Towards a standard analysis of computable guidelines, clinical workflow, decision support and … the curly braces problem
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Author Archives: wolandscat
Towards a standard analysis of computable guidelines, clinical workflow, decision support and … the curly braces problem
Why don’t we have widespread clinical decision support (CDS), computable guidelines, clinical workflow (plans), and why don’t the pieces we do have talk to the health record? The first time I heard such challenges framed was around 2000, and even … Continue reading
Posted in decision support, Health Informatics, openehr, standards
Tagged BPM+, care pathway, care plan, decision support, EHR, guidelines, openEHR
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FHIR Fixes – the choice construct part I
I have posted before on the FHIR ‘choice’ construct, particularly here, where I have explained the problems of the choice construct (essentially: it’s an ad hoc constraint construct that subverts the type system, and doesn’t belong in typed formalisms; none … Continue reading
FHIR fixes: why a type hierarchy would help
One of the principal reasons for why I and others are proposing (some) type hierarchy in the FHIR Admin resources is as follows (my earlier post on this). Working Groups (i.e. committees) building Resources are currently in the situation of … Continue reading
FHIR Fixes – the Observation.value problem
As described in some detail in this earlier post on the FHIR formalism, a number of FHIR Resources contain ‘choice’ attributes of the form attribute[x], such as the one shown above in Observation. These are mapped in the FHIR UML … Continue reading
Fixes for FHIR – the Admin Resources
In this post I revisit the issues with the FHIR Resources described in the earlier post – A FHIR experience: models or just definitions? To summarise: However, there are changes that can be made that will greatly improve these characteristics, … Continue reading
Posted in FHIR, Health Informatics, standards
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Why using HIT standards fails to achieve interoperability
I started working in the Health IT area in 1994, on a major European Commission funded project. I attended years of standards meetings at HL7, CEN and occasionally OMG and ISO from 1999 to about 2012. And I’ve observed the … Continue reading
Improving Process State Representation in FHIR
In this post I document further observations on the FHIR resources, made during the transcription of the DSTU4 FHIR resources to the BMM format used in openEHR, as described here. This post examines the definition of process state in FHIR … Continue reading
Posted in FHIR, Health Informatics, openehr, standards
Tagged fhir, openEHR, process, workflow
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FHIR versus the EHR
One of the many things the FHIR silver bullet hype claims FHIR will solve is the EHR, along with Clinical Decision Support (CDS), Care Pathways, and who knows, paving driveways and launching spacecraft. I have made various arguments against silver … Continue reading
A FHIR Experience – the formalism
This post continues the review presented in the previous post, where I looked at the Administrative resources of FHIR. Here I take a look at the formalism used in FHIR, i.e. how the resources (and profiles) are formally expressed. FHIR … Continue reading
Posted in FHIR, Health Informatics, standards
Tagged e-health, fhir, HL7, interoperability
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A FHIR experience: models or just definitions?
This is a second instalment of a technical review of the HL7 FHIR resources. As described in the previous post, this review is the result of an element-by-element transcription of the FHIR DSTU4 resources to the openEHR BMM (Basic-meta Model) … Continue reading