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11 Monitoring Twin FHRs
Separating FHR Traces
To help you to interpret traces with similar baselines, you can separate the baselines by an offset of
20 bpm by switching trace separation on. For details of the offset, see "Determining the Separation
Order" on page 116.
Switching Trace Separation On and Off
♦
Connect transducers to the monitor to measure FHR. Depending on the measurement method,
you need either two ultrasound transducers or
FM30/50
One ultrasound and one Toco
♦
Enter the
♦
Select
♦
Select
♦
Exit the
Determining the Separation Order
In Configuration Mode, you can choose between two different ways for dealing with the trace offsets
on the recording (the order in which they are separated) when
Enter the
1
Select
2
Select
3
Standard
–
is). No offset is ever applied to the FHR1 trace - it stays where it is. (In case of a third FHR,
this is shifted down by 20 bpm.)
Classic
–
measurement. No offset is ever applied to the FHR2 trace - it stays where it is. (In case of a
third FHR, this is shifted down by 20 bpm.)
Exit the
4
116
+
Main Setup
menu by pressing the
Fetal Recorder
.
Trace Separation
to toggle between
Main Setup
menu.
Main Setup
menu by pressing the
Fetal Recorder
.
Separation Order
to toggle between
: the FHR2 trace is shifted up by 20 bpm (it is recorded 20 bpm higher than it really
: the FHR1 trace is shifted up by 20 bpm when there is more than one FHR
Main Setup
menu.
transducer (to monitor DECG)
Main Setup
.
On
Off
and
.
Main Setup
SmartKey.
Standard
and
Trace Separation
On
is
.
Classic
.
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Troubleshooting
