Sonicaid FM800 Encore Series Instructions for Use
49
6.8
66B
Accidentally recording the wrong signal
As previously referred to (section 6.6), it is possible when
monitoring twins, to pick up the signal for the ‘wrong’ twin.
It is also possible, if the ultrasound transducer is
incorrectly placed, for it to pick up the maternal heart
instead of the fetal heart. Similarly, it is possible for the
maternal ECG to be mistaken for the fetal ECG.
To help guard against these possibilities, the FM800E routinely compares the heart rates
obtained from different sources. If any two rates appear similar (within 3bpm), for more
than three minutes, then:
FM800E beeps
The display shows
!CHECK TRACE FOR SAME HEART RATE
Printed trace
The message and warning are the same no matter what two rates are similar.
If the rates continue to match, the warning is repeated every 2 minutes 30 seconds.
If the FM800E displays this warning, check the validity of the signals being recorded. The
following pairs of rates are compared:
ULT1 with ULT2
ULT1 with FECG
ULT1 with MECG
ULT1 with MSpO2 (heart rate)
ULT2 with FECG
ULT2 with MECG
ULT2 with MSpO2 (heart rate)
FECG with MSpO2 (heart rate)
When listening to the audio output of the heart rate ensure
that the correct channel is selected; ULT1, ULT2, FECG,
MECG or MSpO2 Heart Rate.
Summary of Contents for Sonicaid FM800 Series
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