Category Archives: Health Informatics

A Lingua Franca for e-health takes shape with GraphiteHealth

Posted on 15/05/2022 by wolandscat

Colleagues in e-health often say to me: why don’t you make openEHR easier to map to <insert popular interop standard> (used to be HL7v3, then HL7 CDA, now, HL7 FHIR… DSTU2/3/4/5?). To which I usually reply: if you are implying … Continue reading →

Posted in FHIR, Health Informatics, openehr, standards | Tagged , , , | 2 Comments

The Health IT Platform – a definition

Posted on 14/05/2021 by wolandscat

Following on from various posts in the past, including my 2014 post What is an open platform?, I thought it might be time to post a succinct (as possible) definition of the platform idea, for e-health. As stated in that … Continue reading →

Posted in Health Informatics, standards | Tagged , , | 1 Comment

What is interoperability?

Posted on 17/04/2021 by wolandscat

There are some rather obscure definitions of health IT’s favourite term interoperability floating around, for example:

Posted in Computing, Health Informatics, openehr, standards | Tagged | 6 Comments

Directions in clinical guideline programming – CHA2DS2-VASc

Posted on 29/03/2021 by wolandscat

The above shows a typical web form calculator for the CHA2DS2-VASc score, used for estimating the risk of stroke in patients with non-rheumatic atrial fibrillation (AF), primarily for the purpose of deciding the use of anti-coagulant therapy [Wikipedia]. How would such … Continue reading →

Posted in Computing, decision support, Health Informatics, openehr, standards | Tagged , , , | 2 Comments

Aide Memoire for Computable Domain Models

Posted on 16/02/2021 by wolandscat

Sometimes a graphic is worth more than words. This is an attempt to capture all the salient features of multi-level modelling, the openEHR way. See the openEHR primer for the story. Although this is ‘our way’ of doing it, I … Continue reading →

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Clinical Decision Logic Fun

Posted on 22/10/2020 by wolandscat

How close can we get to making a clinical decision logic language look like the published guidelines which it is used to encode? Below is an openEHR Decision Logic Module (DLM) example, in the current form of the openEHR Decision … Continue reading →

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Towards a standard analysis of computable guidelines, clinical workflow, decision support and … the curly braces problem

Posted on 24/06/2020 by wolandscat

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 →

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FHIR Fixes – the choice construct part I

Posted on 09/03/2020 by wolandscat

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 →

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FHIR fixes: why a type hierarchy would help

Posted on 14/11/2019 by wolandscat

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 →

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FHIR Fixes – the Observation.value problem

Posted on 12/09/2019 by wolandscat

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 →

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