Philips Efficia CM Series - Flow of Events; Message Conventions

Flow of Events
Serial Data Export
3-2 Efficia CM Series Data Export Guide
Flow of Events
The following figure shows the serial data export flow of events.
• Messages are processed one by one.
• Every QRY message from the server generates exactly one ORF message or
Negative ACK message from the monitor.
Message Conventions
This section describes the format and conventions used in the HL7 messages used for
serial data export.
Server
Query Message (QRY)
Observation Reporting (ORF)
Monitor
Invalid query or
no data
Query Message (QRY)
OR
Negative
Acknowledgement (ACK)
Valid query
Send patient
Data is valid
Query Message (QRY)
Observation Reporting (ORF)
Negative
Acknowledgement (ACK)
OR
Positive Acknowledgement
(ACK)
Valid query
Send patient data
Data is invalid
Message Description
QRY Query. The receiving system (server) sends a QRY message to the Efficia CM Series
monitor requesting patient data.
ORF Observation Reporting. The monitor sends an ORF message in reply to the QRY
message. The ORF message contains the patient data and vital signs measurements.
ACK There are two types of Acknowledgement messages:
• Negative ACK: If the QRY is invalid or if there is no data to export, the monitor
sends a Negative ACK to the server. If the server finds an error in the exported
record, it sends a Negative ACK to the monitor.
• Positive ACK: The server sends this message back to the Efficia CM Series
monitor to acknowledge that the ORF message was received and validated.