F15 Series Fetal & Maternal Monitor User Manual Fetal Monitoring
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3 Select 0 (default) ~ 9.
4 Select OK.
NOTE:
1 The DECG beep and HR beep share the same audio channel. Once the DECG beep is
switched on, the HR beep is disabled (set to OFF) automatically.
2 Once the DECG/HR beep volume is changed, the sound switches to channel 1
automatically. Therefore, it is advised against changing DECG/HR beep volume in the
monitoring process.
7.3.5 DECG Gain and Display
You can change the DECG gain by selecting from X1/2, X1, X2, X4 and X8 to adjust the DECG
waveform size for better observation. The system displays a 0.5mV scale at the right side of the
DECG waveform. The height of the 0.5mV bar is directly proportional to the waveform amplitude.
7.3.6 Switching the Artifact Suppression On or Off
When monitoring FHR with DECG, artifacts may occur due to bad connection of the spiral electrode,
excessive motion of the mother, electromyographic interference etc.. The Artifact Suppression
feature is designed to eliminate the interference. When artifact suppression is on, artifacts are
suppressed and not recorded. When it is off, the artifacts are shown as well as the fetal heartbeats.
You can choose to switch the artifact suppression on or off.
1 Select the main menu key on the main interface.
2 Select Fetus > Artifact Suppression.
3 Select ON (default) or OFF.
4 Select OK.
WARNING
When artifact suppression is on, fetal arrhythmia will also be suppressed. Therefore, if fetal
arrhythmia is suspected, switch artifact suppression off.
7.3.7 Detaching the Fetal Spiral Electrode
To detach the fetal spiral electrode, rotate it counterclockwise until it is free from the fetal presenting
part. Do not pull the electrode from the fetal skin forcefully.
Dispose of the used fetal spiral electrode in a proper way. Do not use it again.
7.4 Monitoring Twin FHRs
7.4.1 Monitoring Twins Externally
To monitor twin FHRs externally, you need to connect a US transducer to a fetal monitoring socket and
the second US transducer to another fetal monitoring socket of the monitor. Follow the instructions
described in Section 7.2 Monitoring FHR with Ultrasound to acquire FHR signals for both channels.
Press CHANNEL key to switch the FH sound from one channel to the other.
When the two US transducers are fixed, make sure FH sounds from both channels are clear, two FHR
traces and two FHR numerics are displayed on the screen.
Traditional 510(k) of Fetal & Maternal Monitor
014_14.1_F15_Series_User_Manual
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