We’re looking for an “ankle brachial pressure index” archetype. We did not find anything in CKM. But we did find such an archetype in norwegian ckm by @siljelb . Clinical Knowledge Manager Clinical Knowledge Manager (CKM) er et samarbeidsverktøy for utvikling, behandling, publisering og…

Yeah, I saw the obs.bloodpressure has an ankle measurement location. The (main?) indication for taking a ‘ankle brachial pressure index’ is suspected low (regional) blood pressure in the foot, as part of suspected peripheral arterial disease. So the ankle pressure has a high chance of not adequatel…

[image] joostholslag: In my opinion the brachial pressure would best be recorded as observation.blood_pressure. And the ankle pressure as OBSERVATION.intravascular_pressure (since it’s not a surrogate for the systemic arterial pressure). I agree. Though also perfectly valid to use the ankle p…

Hi Joost, today I came across a somewhat related question and maybe this deserves its own thread (of course only if I did not miss an existing discussion), so sorry for bringing this up in this context. There is a relatively common pattern where an observation like heart rate is part of an assessm…

[image] birger.haarbrandt: Would we design a corresponding template in a way that would store each value twice, inside the Walking Test and a referenced openEHR-EHR-OBSERVATION.pulse.v2 entry? I was about to say that ls what I would do, as very often there is some kind of overall score or cal…

Yes I think this is the correct approach. It’s like doing an ECG, which could be done with different protocols: at rest, Bruce protocol (treadmill) etc. Main thing is that the OBSERVATION.state or else the EVENT.state includes a representation of the patient state, so that like samples can be compa…

Nice question. Agree to template on obs.pulse making sure to faithfully record state. And not recording the values twice. However I do feel there should be a specific Rockport fitness walking test observation. However what goes in there I’m not sure. Maybe a list of links to the individual obs.puls…

My understanding of the requirements is not to record the pulse per lap but to record the pulse rate at the time of completing a 1-mile walk or jog at submaximal and an undefined level of exertion PLUS the time it took them to cover the distance. That puts quite a different tilt on the modelling IMO…

Thanks everybody for providing such valuable input, I had the suspicion this could be a bit tricky. @ian.mcnicoll : my concern would be that having very sophisticated constraints on the template level would make it unlikely that people would come up with the same representation twice, making interop…

After reading @heather.leslie 's excellent analysis, I agree that a separate Observation is more appropriate. Partly because of the complexity of constraints but more because the circumstances of the test require very specific conditions. I would now say, on the basis of Heather’s analysis see the…

[image] ian.mcnicoll: I bet the banks don’t have to think of this sort of thing!! That’s why ‘health informaticist’ is not on the list of 20 most likely professions to be replaced by AI ! [image] birger.haarbrandt: If we ask “give me all pulse measurements of a patient” these should certa…

Ankle brachial pressure index

Clinical Ask IEB

thomas.beale (Thomas Beale) 12 February 2023 22:15 17

On this question of re-using already recorded data, some possible solution concepts here:

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Ankle brachial pressure index

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