User's Manual

F Series Fetal & Maternal Monitor User Manual Troubleshooting
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A3.4 Trouble with Ultrasound FHR Monitoring
Phenomenon Possible Cause Solution
Inconstant trace
/ display
The patient is overweighted. Monitor FHR with DECG.
Improper ultrasound transducer
position.
Adjust the position of the
transducer till the better signal is
received.
Loose belt. Tighten the belt.
Superfluous aquasonic coupling
gel.
Wipe off superfluous aquasonic
coupling gel.
Frequent fetal movements. Delay the monitoring.
Maternal movement.
Request the patient to calm down
and stay still.
Inadequate aquasonic coupling
gel.
Use recommended aquasonic
coupling gel quantity.
Doubtful FHR
Record maternal heart rate
wrongly.
Change the position of the
ultrasound transducer.
The transducer is not well placed
in position, and the mixed noise
has been recorded.
Adjust the position of the
transducer.
Feint trace or no trace
Improper paper.
Use paper recommended by the
manufacturer.
The paper drawer is not locked.
Slide the paper drawer in until
both latches are locked in
position.
Adjusting nuts of the print head
are unbalanced.
Contact the manufacturer for
service.
A3.5 Troubles with DECG FHR Monitoring
Symptom Possible Cause Solution
Inconstant trend
Inconstant display
No ECG signal Use a new spiral electrode
Bad contact of reference electrode
and patient
Use a new spiral electrode