Cadence II Fetal Monitor Service Manual
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The elasticity of belt can be adjusted, which make the pregnant woman monitored in the
comfortable situation. Also verify the position of transducer one has not changed.
Verify the monitor is displaying fetal heart rate values and traces for both fetuses.
④ Monitor Adjustments
Readjust the volume settings for the desired loudness.
Figure 5-1 Ultrasound transducer & TOCO transducer positioning
CAUTION : Do not mistake the higher maternal heart rate for fetal heart rate.
Notes:
① The best quality records will only be obtained if the transducer is placed in the
optimum position.
② Positions with strong placental sounds (swishing) or fetal cord pulse (indistinct pulse
at fetal rate) should be avoided.
③ If the fetus is in the cephalic position and the mother is supine, the clearest heart
sound will normally be found on the midline below the umbilicus. During monitoring
prolonged lying in the supine position should be avoided owing to the possibility of
supine hypotension. Sitting up or lateral positions are preferable and may be more
comfortable to the mother.
④ It is not possible to FHR unless an audible fetal heart signal is present. The fetal
pulse can be distinguished from the maternal pulse by feeling the mother’s pulse
during the examination.
5.2 Fetal ECG Electrode Monitoring of FHR
Contraindications
The fetal spiral electrode can be used when amniotic membranes adequately ruptured
and sufficient cervical dilatation assured. The fetal electrode tip is designed to penetrate
the epidermis of the fetus; therefore, trauma, hemorrhage and/or infection can occur.
The electrode should be used with strict adherence to aseptic technique.
Measure TOCO
Measure FHR
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