
CADENCE II Fetal Monitor User Manual
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A3.6 Monitoring Contractions (External)
Symptom Possible
Cause
Solution
The belt is too tight, too loose
or has no elasticity.
Ensure the belt has been used
accurately and neither too tight,
nor too loose.
Maternal movement
Relax the patient.
Poor trend quality or
fluctuant UA baseline
Fetal movement
Wait for a moment.
Too high TOCO sensitivity
(higher than 100 unit)
The uterus pressure is far
higher than the average
value.
Make sure the TOCO transducer
is well contacted with the
abdominal skin. Reposition of
TOCO transducer if necessary.
A3.7 Monitoring Contractions (Internal)
Symptom Possible
Cause
Solution
No trend
The intrauterine catheter is
jammed
Wash with disinfector
No pressure change when
uterine contraction
“Dry” environment or the tip
of intrauterine catheter is
placed extraovularly
Wash with disinfector or change
the position of transducer
Only see the IUP peak but
no baseline
Zero adjustment is wrong
Zero the system
The trend is in a beeline.
The connector failure.
Move or reposition the catheter. If
the trend still displays no
fluctuation, change intrauterine
cable.
A3.8 Blown Fuses
WARNING
:
Switch off the monitor and unplug it before changing the fuse.
Replace the fuse when it is blown.
The two fuses of CADENCE II monitor are located on the right panel, their specifications are:
Size:
Ф
5mm*20mm; Model: T1.6AL 250V.