11 Monitoring Twin FHRs
118
Only the FHR1 trace is offset. The numerical FHR value displayed on the monitor remains
unchanged. Subtract 20 from the recorded trace for FHR1 to obtain the true FHR1 value. For
example, if the recorded trace shows 160, then the true FHR is 140.
Switching Trace Separation On and Off
1
Connect three ultrasound transducers to the monitor to measure FHR.
2
See “Switching Trace Separation On and Off ” on page 116 for details of how to switch trace
separation on or off.
When Trace Separation is On
When trace separation is turned on, the recorder prints a dotted line labeled with the three FHRs at the
top, and
at the bottom. Examples of the two methods (
Standard
,
Classic
) for determining the
trace separation order are provided here.
When Trace Separation is Off
To indicate that trace separation is switched off, a dotted line labeled
prints across the FHR scale.
1
"
Standard
" trace separation switched off here
2
"
Classic
" trace separation switched off here
Summary of Contents for Avalon FM20
Page 2: ......
Page 8: ...8 ...
Page 56: ...3 Basic Operation 56 ...
Page 72: ...5 Alarms 72 ...
Page 82: ...6 Patient Alarms and INOPs 82 ...
Page 86: ...7 Admitting and Discharging 86 ...
Page 90: ...8 Non Stress Test Timer 90 ...
Page 120: ...11 Monitoring Twin FHRs 120 ...
Page 126: ...12 Monitoring Triple FHRs 126 ...
Page 136: ...15 Monitoring Uterine Activity Internally 136 ...
Page 142: ...16 Monitoring FHR Using DECG 142 Testing DECG Mode Refer to the monitor s Service Guide ...
Page 154: ...18 Monitoring SpO2 154 ...
Page 164: ...20 Printing the ECG Waveform 164 ...
Page 166: ...21 Paper Save Mode for Maternal Measurements 166 ...
Page 170: ...22 Recovering Data 170 ...
Page 174: ...23 Care and Cleaning 174 ...
Page 188: ...25 Accessories and Supplies 188 ...
Page 216: ...26 Specifications and Standards Compliance 216 ...
Page 221: ...Part Number 453564290161 Printed in Germany 08 11 453564290161 ...