F9, F9 Express Fetal & Maternal Monitor User Manual Fetal Monitoring
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If the maternal heart signal is misidentified as the fetal heart signal, Repositioning of the
transducer is needed.
NOTE:
1 Do not mistake the high maternal heart rate for fetal heart rate. The fetal pulse can
be distinguished from the maternal pulse by feeling the mother’s pulse during the
examination.
2 The best quality records will only be obtained if the probe is placed in the optimum
position. Positions with strong placental sounds or umbilical blood flow sound should
be avoided.
3 If the fetus is in the cephalic presentation and the mother is supine, the clearest
heart sound will normally be found on the midline below the umbilicus. During
monitoring, the patient’s 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.
4 During long-time monitoring, the gel may dry out as the transducer moves around.
Add more gel in time if it is inadequate.
5 When applied to the patient, the ultrasound transducer may warm slightly (less than
2°C (3.6ºF) above ambient temperature). When NOT applied, at the ambient
temperature of 40°C (104ºF), the ultrasound transducer may reach the highest
temperature of 43°C (109.4ºF).
6 When an ultrasound transducer is connected to the monitor, but not applied to the
patient, the measurement may generate unexpected intermittent FHR readings.
7.2.2 Monitoring FHR with Wireless Ultrasound Transducer
7.2.2.1 Parts Required
a) US-T transducer
b) Aquasonic coupling gel
c) Belt
7.2.2.2 Monitoring Procedure
a) Connect the FTS-3 system to the monitor and switch on. Refer to section 3.2.7 connecting to
the Monitor.
b) Take up a US-T transducer and make sure it is successfully connected to the base station.
c) Monitor FHR following the procedures described in section 7.2.1.2 Monitoring Procedure.
7.2.3 Switching the FHR Alarm On or Off
Always check if the alarm settings are appropriate for your patient before starting a monitoring.
You can choose to switch the FHR alarm on or off. If the fetal heart alarm is switched off, the
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