F9, F9 Express Fetal & Maternal Monitor User Manual Fetal Monitoring
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WARNING
3 If FHR reduces more than 10 bpm suddenly, or the beat of fetal heart sounds slower
abruptly, please check if it is the MHR that is being monitored by the transducer. If so,
relocate the transducer for the best fetal heart signal.
4 The sphere of activity for the fetus is much larger during mid-trimester of gestation
(from 24
th
week to 28
th
week). When fetal heart moves away from the US transducer,
please redetermine the fetal heart position and relocate the transducer.
5 Inspect patient skin before applying the transducer for monitoring. If the skin quality
is poor, especially when the skin is damaged or irritated, please change a site to
apply the transducer.
6 During long-time monitoring, please inspect the application site of the transducer at
least every half an hour. If the skin quality changes, you should move the transducer
to another site.
7 Do not mistake the maternal movement for fetal movement.
CAUTION
1 It is recommended to start printing FHR trace after clear fetal heart signal is detected
and FHR computing has stabilized.
2 If AFM is enabled, suggest to reduce maternal movement and walking.
7.2.1 Monitoring FHR with Wired Ultrasound Transducer
7.2.1.1 Parts Required
b) US transducer
c) Aquasonic coupling gel
d) Belt
7.2.1.2 Monitoring Procedure
a) Placing Transducer Belt
Place the transducer belts across the bed, ensuring that the belt will be around the abdomen
when it is fastened. Lay the patient on the bed.
Alternatively, the patient can take a sitting position. Arrange the belt around her abdomen.
b) Determining the Transducer Position
Determine the fetal position using Leopold‟s maneuvers.
Search for the location of the fetal heart using a stethoscope or a fetoscope. The best
fetal heart signal can be obtained through the fetal back.
Place the transducer below the navel for head presentation and place the transducer
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