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Faint trace or no trace
The
monitor
gives
"check paper" warning
when there is paper in
the drawer.
A3.4 Trouble with Ultrasound FHR Monitoring
Error Condition
Inconstant trace
/ display
Questionable FHR
The channel from the
unused
transducer
displays numeric values.
A3.5 Trouble with Contractions Monitoring (External)
Error Condition
Bad
trace
quality
Wrong paper is being used.
The paper sensor is dirty.
Possible Cause
The
pregnant
woman
obese.
Improper ultrasound transducer
position.
Loose belt.
Excess ultrasound coupling gel.
Frequent fetal movements.
Maternal movement.
Inadequate ultrasound coupling
gel.
Recording maternal heart rate
inadvertently.
The transducer is not securely
placed in position, and the mixed
noise has been recorded.
Inadvertently
left
transducer
connected
monitoring.
Possible Cause
or The belt is too tight or too loose.
- 68 -
Appendix 3: Troubleshooting
Use paper recommended
by manufacturer.
Clean the paper sensor gently
with a dry cloth.
Corrective Action
is
too
Monitor FHR with DECG, if
applicable.
Adjust
the
transducer until a better signal
is received.
Tighten the belt.
Wipe off excess ultrasound
coupling gel.
Delay the monitoring.
Request the patient to reduce
movements.
Add
ultrasound
coupling gel.
Change the position of the
ultrasound transducer.
Adjust
the
transducer.
unused
while
Unplug the unused transducer.
Corrective Action
Adjust the belt.
position
of
the
aquasonic
position
of
the
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