Monitoring Invasive Pressure
100
LIFEPAK 15 Monitor/Defibrillator Operating Instructions
Troubleshooting Tips
The error messages in the following table use the text
PX
to represent any of the labels for
invasive pressure, including P1, P2, and the user-selectable labels ART, PA, CVP, ICP, and LAP.
Table 17
Troubleshooting Tips for IP Monitoring
OBSERVATION
POSSIBLE CAUSE
CORRECTIVE ACTION
Invasive pressure value is blank
No transducer is connected
•
Connect the transducer to the
cable, and the cable to the
monitor.
No scale appears next to the
waveform
The zero reference has not
been established
•
Zero the transducer.
PX NOT ZEROED
message
appears
The zero reference has not
been established
•
Zero the transducer.
PX ZERO FAILED
message
appears
An unsuccessful attempt
has been made to set a zero
reference value
•
Make sure that the transducer
is open to air and repeat the
attempt to zero.
Dampened waveform
Loose connection
•
Check the entire system for
leaks. Tighten all connections.
Replace any defective
stopcocks.
Tubing too long or too
compliant
•
Use short, stiff tubing with
large diameter.
Thrombus formation, air
bubbles, or blood left in
catheter after blood draw
•
Use syringe to draw back air
or particles in catheter, and
then flush system.
Kinked catheter, catheter tip
against vessel wall, arterial
spasm
•
Reposition catheter. Anchor
catheter to skin at insertion
site.
Resonating waveform
Tubing too long
•
Use short, stiff tubing with a
large diameter.
No waveform.
No pressure reading.
Transducer closed to
patient
•
Check patient. Check
stopcock positions and
monitor setup.
Defibrillator shock just
delivered
•
None.
Invasive BP lower than cuff BP
Transducer level higher than
the heart
•
Reposition transducer to
correct height.
Loose connection
•
Tighten all connections.
Thrombus formation, air
bubbles, or blood in
catheter, kinking, or
arteriospasm
•
Use syringe to draw back air
or particles in catheter, and
then flush system.
Improper zero reference
•
Open stopcock to air and
rezero transducer.
Defective transducer
•
Replace transducer.
Summary of Contents for LIFEPAK 15
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