Cadence Fetal Monitor User Manual
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Good: green and flash
Poor: orange and flash
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.
The fetal spiral electrode should not be applied to the fetal face, fontanels or genitalia.
Do not apply when placenta previa is present; when the mother has visible genital herpes lesions
or reports symptoms of prodromal lesions; when the mother is HIV sero-positive; when mother is
a confirmed carrier of hemophilia and the fetus is affected or of unknown status; or when it is not
possible to identify fetal presenting part where application is being considered. Application when
fetus is extremely premature, or in the presence of a maternal infection such as Hepatitis B,
Group B hemolytic strep, syphilis or gonorrhea is not recommended but may be acceptable if a
clear benefit to the fetus or mother can be established.
Measure TOCO
Measure FHR
