Welch Allyn 1500 Patient Monitor v.1.4.X - User Manual - Manual (Page 90)

86 Monitoring and Measurements Welch Allyn 1500 Patient Monitor
CO messages
The following self-clearing alert messages may be displayed during the CO measurement
process:
Message Message trigger and when displayed Suggested action
BT out of range (too
high or
BT out of range (too
low) Blood temperature out of range (High or Low),
displayed when:
•
detected during a CO measurement session.
• CO start has been selected for manual
mode.
Verify correct catheter position.
IT out of range (too
high) or
IT out of range (too
low) Injectate temperature out of range (high or low),
displayed when:
•
detected during a CO measurement session.
• detected after CO start has been selected
for manual mode.
Verify that injectate volume and temperature
corresponds for the catheter used and that the
computation constant has been entered
correctly.
Check injectate temperature.
Check injectate probe and catheter
probe connection.
CO measurement
Time-out No blood temperature change, displayed when:
•
CO start has been selected for manual mode
and no reading is detected in the time-out
period.
Ensure the injectate is injected soon after CO
start has been selected. Reselect Start.
Verify correct catheter position.
BT unplugged Blood temperature transducer unplugged,
displayed when:
•
detected during a CO measurement session.
• detected after CO start has been selected
for manual mode.
Check connections and catheter.
IT unplugged Injectate temperature transducer unplugged,
displayed when:
•
detected during a CO measurement session.
• detected after CO start has been selected
for manual mode.
Check connections.
BT check sensor Blood temperature transducer fault, displayed
when:
•
detected during a CO measurement session.
• detected after CO start has been selected
for manual mode.
Check connections.
Check catheter.
IT check sensor Injectate temperature transducer fault,
displayed when:
•
detected during a CO measurement session.
• detected after CO start has been selected
for manual mode.
Check connections.
Check injectate sensor.
CO computation
constant not yet
entered Computation constant not yet entered, displayed
when:
•
detected during a CO measurement session.
• detected after CO start has been selected
for manual mode.
Enter the computation constant.