Trigger – Serves as the integration point between the application workflow and Bridges
-generally an action in Hyperspace, like clicking a button or closing an activity
-a single, clearly defined action that a user or process can take that results in an
interface message being created and sent
An interface message contains\u2026. – Data about an event (like a patient being admitted
to the hospital)
MSH-11 and MSH-12 are\u2026 – the HL7 processing ID and version; Epic checks these
values on an incoming message and rejects the message if they do not match the
expected values
Segment Identifier – Three character code that identifies what kind of data that
segment contains
PID-5 – patient name
NTE segment – can follow many different segments
Z-segment – custom segment for a specific implementation
Is it necessary to send empty fields following the last valued field? – No
Within a field do you need to send all components? – Only as many as are valued
Blank fields\u2026 – don’t file anything
Delete character HL7 – double quotes ” “— tells the receiving system to delete a piece
of info it has
FHIR – specifies RESTful exchange method via HTTPs to access data
Other standards supported by Bridges – X12, FHIR, NCPDP, DICOM, and Direct
Event (in context of outgoing message flow) – small set of values with the necessary
info to build the message: patient ID, patient contact, type of message, and additional
info
-contains directions for where the interface should pull the information it needs from the
database
Queue – storage location outside of Chronicles database structure
Event Queue is procesed by\u2026 – the Event Daemon
Daemon (Outgoing Message Flow) – process that runs in the background without any
direct user action
Event Daemon (Outgoing Message Flow) – pulls an event off the Event Queue, uses
the information in the event to build the message and finally deletes the event from the
event queue.
The event daemon puts the message it has built onto the data queue and adds an
instruction to the Control Queue
builds an HL7 message based on data pulled from Chronicles
Data Queue (Outgoing Message Flow) – contains the full text of the message along
with some additional metadata (i.e. timestamp) about message processing
Control Queue (Outgoing Message Flow) – a to-do list and contains very little data
-processed by the Communications Daemon
-maintains a list of messages waiting to be processed
Comm Deamon (Outgoing Message Flow) – reads an instruction from the Control
Queue and copies the appropriate message off the Data Queue
-sends the message out of Epic and waits for an ACK to be reutrned
-deletes instruction from the Control Queue and proceeds to the next instruction
-sends or receives acknowledgments over a TCP\/IP connection
Comm Daemon (Incoming Message Flow) – -listens constantly for messages coming
into the system
-validates MSH-11 and MSH-12 before accepting it, storing it in the data queue, and
adding instruction to the control queue
-sends or receives acknowledgments over a TCP\/IP connection
Control Queue (Incoming Message Flow) – processed by the Filer Daemon
Filer Daemon – pulls an instruction from the Control Queue, retrieves the
corresponding message from the Data Queue, and then attempts to file the message.
Filing means that the Filer Daemon attempts to store the data in Chronicles.
If the filer daemon is successful, the data is added to the appropriate records in
Chronicles.
When there is a problem, and the data in the message cannot be filed, an interface
error message is logged
Translates HL7 data into something that can be stored to the database
When the filer daemon attempts to process a message, there are three things that can
happen – 1) it files the message into Chronicles, possibly with one or more warning or
notification errors
2) its unable to file the entire message because there is something critically wrong with
the message. This is indicated by a fatal or critical error
3) it’s unable to file the message because part of the record to which the message
needs to file is locked
Resequencing – -a record is locked when a user or process is updating it
-IF a filer daemon receives a message for a patient, but that patient’s record is already
being updated with an active lock, then the Filer stores the instruction for that message
on another queue- the Holding Queue.
-the message remains on the Holding Queue until the lock is released, so that the Filer
Daemon can move onto the next message in the Control Queue for processing
The filer Daemon checks messages on the Holding Queue periodically to determine
whether messages on the Holding Queue are ready to file
If the Filer Daemon encounters a message on the Control Queue that needs the same
locks as a message already on the Holding Queue, that message is also added to the
Holding Queue. This ensures that the messages always file into Chronicles in the same
order they were received for a patient
Holding QUeue – Acts as a waiting area for messages that cannot get a lock to store
information to the database
Interconnect – Epic’s web services framework
-enables Epic applications to initiate and receive web service requests with an external
application
-sometimes used as an alternate communication method to TCP\/IP for interfaces
-communicates messages securely using an HTTPS framework<\/p>\n","protected":false},"excerpt":{"rendered":"
Trigger – Serves as the integration point between the application workflow and Bridges-generally an action in Hyperspace, like clicking a button or closing an activity-a single, clearly defined action that a user or process can take that results in aninterface message being created and sentAn interface message contains\u2026. – Data about an event (like a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-118896","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/118896","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=118896"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/118896\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=118896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=118896"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=118896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}