Scenario:  Clinical Solution A Retrieves Clinical Data from a Clinical Data Repository.

Assumption: Clinical Data is stored in a Central Clinical Data Repository

This sequence diagram provides the option of using the CA:FeX Interoperability Specifications that provide support for saving and retrieving data (e.g. documents) to and from a central Clinical Data Repository. This specification includes a Data Consumer and a Data Responder actor. Additionally, this sequence diagram uses the 'Search Data' and 'Retrieve Data' FHIR operations. 

Sequence Diagram Overview: 

Below provides guidance on how to read the sequence diagram:  

• This sequence diagram illustrates how the different standardized actors of system should interact with each other to carry out specific standardized transactions, and the order in which the transactions and interactions occur when Use Case 2 of the CA:FeX Specification is executed.
• Data Consumer role varies by client type:
  • HCP: Clinical Solution, e.g., EMR used by the Health Care Provider to request & retrieve access to clinical document(s) from the Clinical Data Repository 
  • Patient: Patient Portal used by the Patient / Subject of Care to request & retrieve access to their clinical document(s) from the Clinical Data Repository 
• The legend on the bottom right corner describes the different system components, actors and transactions that are necessary to carry out  this particular use case. 
• The green swim lane is a simplified view of the actors and transactions required by the Foundational IHE Profiles, in addition to the other ones that are not explicitly illustrated on the diagram (e.g. ATNA, CT) but included as a white note.  These are pre-requisite conditions for this particular use case and it is assumed that these will be satisfied. 
• The blue swim lanes groups sequence of processes (along with their required actors and transactions) that are needed to occur to satisfy this particular use case.  These are to be read from left to right and top to bottom. 
• The red note boxes describe important call outs, information and notes that provide more context for the sequence diagram. 
• More information about those details of the Foundational IHE Profiles can be found in the PS-CA Specifications available here.

Additional Considerations

The sequence diagrams included in this section do not showcase all of the possible combinations of IHE profiles and transactions that can be used for a particular implementation pattern. For example, ITI-83 transaction can be used in place of ITI-78 if the preferred implementation pattern is PIXm/PMIR.