Revision B 120 Series Maternal/Fetal Monitor 15-11
2015590-001
Troubleshooting: Blood Pressure Troubleshooting
Blood Pressure Troubleshooting
Table 15-8. Blood Pressure Troubleshooting
Problem Probable Cause Possible Solution
High reading.
Measurement taken during uterine
contraction.
îš„ Annotate chart, then take a manual
reading in-between contractions.
îš„ If possible, cancel reading during
contraction.
 Enable the monitor’s Smart BP
feature.
CHECK CUFF message displayed in NBP
area of display.
îš„ Improper cuff position.
îš„ Loose cuff.
îš„ Air pressure error.
îš„ Maternal movement.
îš„ Hose not properly connected to monitor.
îš„ Neonatal cuff connected.
îš„ Reposition cuff.
îš„ Tighten cuff.
îš„ Contact Biomedical Engineering
Department.
îš„ Restrict patient limb movement.
îš„ Ensure that hose is firmly attached to
monitor.
îš„ Ensure an adult cuff is connected.
OVERPRESSURE message displayed in
NBP area of display.
îš„ Cuff pressure has exceeded the
overpressure limit of 285 ± 15 mmHg.
îš„ Kinked hose.
îš„ Blocked hose.
îš„ Restrict patient limb movement. If this is
not the case, contact Biomedical
Engineering Department.
îš„ Check the external cuff for kinks.
îš„ Perform pneumatic test.
LEAK message displayed in NBP area of
display.
Pneumatic leak; air leak; or loose cuff.
Check cuff for snug fit. Check cuff and
hose connections for leaks.
COMM message displayed in NBP area of
display.
Communication error between the built-in
NBP module and the remainder of the
monitor circuitry.
Call Biomedical Engineering Department.
MOTION message displayed in NBP area of
display.
Excessive maternal movement. Restrict patient limb movement. Restrain
limb if necessary.
Dashes (– – –) displayed in NBP area of
display (and possibly in MHR/P area if NBP
selected as MHR/P source).
Maximum reading determination time
exceeded.
îš„ Reposition cuff.
îš„ Check patient for arrhythmia. Move cuff
to another limb.
REPAIR message display in NBP area of
display.
System error or self-test failure.
Contact Biomedical Engineering
Department.
WEAK SIGNAL message
Monitor unable to make a determination
due to insufficient signal.
Assess patient situation.
MOTION message Excessive maternal movement.
Talk to patient about the importance of
minimizing limb movement.
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