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If Two Do the Same Thing... Comparing IHE Profiles PIX/PDQ Based On HL7 2.x And HL7 Version 3

Author(s): Marek Václavík

Background: IHE integration profiles for managing patient identification, PIX and PDQ, exist in two alternative forms: on the one hand using HL7 2.x, on the other hand based on HL7 Version 3.

Objective: Knowing differences between the competing integration profiles shall assist the user to choose the one better suitable for their specific deployment.

Methods: Differences in the set of interactions, the information model, the vocabulary and the required behavior of individual interactions were analyzed.

Results: A list of specific features and constraints for each of the integration profiles was compiled.

Conclusions: Not all of the identified deltas originate in the inherent incompatibility between HL7 2.x and 3.0, they also result from the specific constraints imposed by the IHE profile. Identified disparities include the communication pattern, constraints to identifier schemas and pseudonymization capabilities.


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