Difference between revisions of "201709 LastN Query Track"
| Line 36: | Line 36: | ||
<!-- Roles are sets of functionality (generally defined by a Conformance resource) that a single system can take on --> | <!-- Roles are sets of functionality (generally defined by a Conformance resource) that a single system can take on --> | ||
| − | For context, roles, and scenarios of the FHIR Query and FHIR Server and Scenarios, refere to the lastn Operation Definition and the examples in the FHIR Specification [http://build.fhir.org/observation-operations.html#lastn here] | + | For context, roles, and scenarios of the FHIR Query and FHIR Server and Scenarios, refere to the lastn Operation Definition and the examples in the FHIR Specification '''[http://build.fhir.org/observation-operations.html#lastn here]''' |
'''Roles:''' | '''Roles:''' | ||
Revision as of 23:24, 1 June 2017
Last N Observations Query Track
Submitting WG/Project/Implementer Group
Orders and Observations WorkGroup
Justification
The lastn query meets the common need for searching for the most recent or last n=number of observations for a subject.
Examples where this query could be used:
- Fetch the last 5 temperatures for a patient to view trends
- Get the most recent lab results for patient
- Fetch the last 3 results for all vitals for a patient
The $lastn operation is has been introduced as part of FHIR STU3, but has not yet undergone yet been widley implemented. This goal of this track is encourage server implementation of the operation, uncover implementation issues, and help evaluate if similar operations would be useful for other clinical resources such DiagnosticReport.
Proposed Track Lead
Expected participants
Servers:
- Grahame's test server
- Cerner
Roles & Scenarios
For context, roles, and scenarios of the FHIR Query and FHIR Server and Scenarios, refere to the lastn Operation Definition and the examples in the FHIR Specification here
Roles:
- Query Requester: User who makes an API request
- Query Responder: FHIR Server
Action:
- Following the Example in the Specification, requester make an api request to the FHIR server
- FHIR server returns the the requested resource Bundle or appropriate error/OperationDefinition
Precondition:
- This server has a baseURL (see the FHIR specification)
Success Criteria:
- FHIR Server returns expected resources in bundle as outlined in the speicifiation example
Bonus point:
- Make additional lastn requests to determine limitations of operation.
- Extend lastn operation to DiagnosticReport resource (e.g., fetch me the last 3 CBC's for Mrs Smith)
