F15 Series Fetal & Maternal Monitor User Manual After Monitoring
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X4. When a good signal is obtained, the ECG signal with regular rhythms will appear in the ECG
waveform display area, and the wireless transducer signal quality icon will become full in 3~5s. If
effective ECG signal is not obtained or the ECG signal is not obvious, the accuracy and stability of HR
calculation will be influenced. When ECG signal is not good, you can rotate the transducer slightly in
the left and right 90° range or change the placement position. The ECG signal can only be obtained
when there’s good contact between the three metal electrodes and the skin, or there will be
phenomenon of bad contact or ECG leads off.
Figure 8-8 Placing the TOCO Transducer
4) Fix the transducer
During long-term monitoring process, contractions, fetal movements, pregnant women's movements
and changes of abdomen profile are easy to cause the transducer to slide, and then the severe
interference will cover the ECG signal and in the end cause wrong calculation of HR In order to reduce
the interference caused by such situations, please ensure that the tightness of the belt is appropriate
so that the transducer can be well fitted to the skin.
WARNING
1 The reliability of the mother's ECG signal obtained by the MECG-R in the pregnant woman
is significantly reduced when there’s a large body movement or during the second stage
of labor. In this case, it is recommended to adopt maternal ECG monitoring with wired
leads or a SpO2 transducer to obtain maternal heart rate.
2 The electrode sleeve used to monitor maternal heart rate should be attached to the upper,
flat area of abdomen as much as possible. Please check regularly if the metal electrode is
in good contact with the skin.
3 When the pregnant woman is in lateral position, please pay attention to the lead-off alarm
information and adjust the transducer position in time to ensure that the monitoring
continues normally.
4 The purpose of using electrode sleeve is to obtain maternal HR. When the ultrasound
transducer detects MHR by mistake, the monitor will issue signal overlap alarm (FHR HR),
reminding user to re-confirm the detection of fetal heart rate.
5 The ECG waveform obtained by the electrode sleeve is not through standard leads. The
ECG waveform is only a reference for ECG signal quality when user is obtaining HR and it
can’t be used for diagnosis.
NOTE:
1 If the electrode is not in contact with the skin after starting up of the monitor or falls off
during the monitoring process, the monitor will display “ECG LEADS OFF” alarm in the screen
information area to draw the medical staff's attention; the time to reactivate alarm after the
alarm is muted is determined by the set silence duration.
2 Strenuous exercise interferes with heart rate calculations, please try to avoid them.
3 Due to the individual differences in the quality of the ECG signal in the abdominal position,
there are very few individuals who cannot obtain an effective ECG signal. In this case, please
change other MHR monitoring methods.
8.3.4 Changing HR Beep Volume
When the HR beep is enabled, the monitor gives a beep sound of maternal heart. The frequency of
HR beep corresponds to the maternal heart rate, but occasionally it may differ due to weak HR signal.
Traditional 510(k) of Fetal & Maternal Monitor
014_14.1_F15_Series_User_Manual
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