When a new document is processed into OnBase(using scan queues, COLD, DIP, Workflow, or HL7), the OnBase HL7 module sends Optum a message containing a pointer to the new document. Optum stores the pointer and links it to the appropriate patient encounter, allowing the document to be retrieved from within Optum.
When an Optum user requests the OnBase document, Optum passes the document's handle and a page range to the OnBase Application Server. The Application Server retrieves the latest revision of the document and sends it back to Optum. TIFF images are streamed in chunks until Optum has received the requested page range. Other file formats are returned in one chunk. Once Optum receives the document, the Optum viewer displays the document to the user.
If the document is updated within OnBase Workflow, then Workflow sends an HL7 message to notify Optum of the update, provided the Workflow life cycle is configured to use the Send HL7 Message action. The next time the document is requested from within Optum, Optum requests a refreshed copy of the document from the OnBase Application Server.