Allow multiple actions per Medical Action

[mshadbolt]

Wondered if it had been considered to allow multiple actions per medical action?

Our use case is that we have patients with a specific treatment that included multiple drugs that were administered at the same time. Therefore they share the same treatment_intent, response_to_treatment, treatment_termination_reason. But in the current model, only one action can be specified in a medical_action and each action (treatment) can have only one agent.

In this scenario it would be ideal if we could have one MedicalAction with multiple actions (treatments) to characterize a treatment regimen with multiple drugs as one MedicalAction.

It would avoid needing to repeat information on multiple MedicalAction objects.

Or let me know if there is a better way to model this.

Thanks!

P.S. I am aware of the TherapeuticRegimen object but that doesn't quite fit our use case as we do have a list of drugs that were administered, not a reference

[mshadbolt]

Further to discussion today in the phenopackets meeting. I went back and looked at TherapeuticRegimen, and in our case we don't really have an identifier for a specific regimen that was used. We just know that a specific patient was treated with a number of drugs concurrently. As I said above, we could create multiple medical actions with repeated information that covers the same dates to show they were concurrent, but potentially could be more efficient to allow a single medical_action to have multiple treatments. Not sure how common this scenario is for others.