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8.2 Traces
Due to the LCD size, resolution and system settings, the traces displayed on the screen
may look different from the recorder printout. The printout should prevail when making
diagnoses.
Main traces
The y-axis of the trace indicates the numerics of FHR. The range is 30 bpm ~
1, 2
240 bpm (American standard) or 50 bpm ~ 210 bmp (International standard).
FHR1/FHR2 trace
The positions of the two broken lines in between the fetal heart rate pane vary
with the alarm limits (with the lowest at 100 and highest at 180). You can
easily tell if the fetal heart rate is too low or too high.
3 AFM trace
The y-axis indicates the scope of fetal movement.
NOTE:
The AFM trace is only for reference, please take the MFM marks as criterion.
4 TOCO trace
The y-axis indicates the numeric of TOCO. The range is 0% ~ 100%.
Other elements:
This symbol indicates the new monitoring starts.
This symbol indicates a manual fetal movement, and it appears after the
patient presses the FM marker when she feels a fetal movement.
This symbol indicates the MARK key is pressed to record an event, such as
the patient turning around.
This symbol indicates the monitor is zeroed by pressing AUTO ZERO key.
Chapter 8: Understanding Measurement Results
WARNING
Figure 8-4 Traces
- 47 -
1 FHR1 Trace
2 FHR2 Trace
3 AFM Trace
4 TOCO Trace
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