GE HEALTHCARE B20, User'S Reference Manual

Page: 222 / 320

B40/B20 Patient Monitor
13-6
Pulse oximetry menu
Pleth Scale Changing size of plethysmograph by changing scale. The scale indicator number is displayed
on the left side of the waveform.
− GE TruSignal SpO
2
configuration: The selection is 2 , 5 , 10 , 20 , 50 , Auto .
If the pleth scale selection is Auto , the scale of the plethysmographic waveform display is
automatically set during ‘Pulse Search’. The scale is then kept constant throughout the
case to enable easy detection of changes in the patient's perfusion.
With automatic
AUTO scaling mode, the scale changes automatically if the amplitude of
the pleth waveform either exceeds the current scale or falls below the maximum value of
the next lower scale by 10% for 30 seconds or more. When the scale changes, the
message ‘Scale changed’ is displayed.
− Nellcor and Masimo SpO
2
configuration: The selection is 1X, 2X, 4X, 8X.
SpO
2
Response (GE SpO
2
configuration only)
Selecting the SpO
2
averaging time. The selections are Normal : 12 seconds (default setting),
Fast : 3 seconds.
Averaging (Masimo SpO
2
configuration only)
Adjusting the averaging time. It can be 2, 4, 8, 10, 12, 14, 16s.
SpO
2
Pulse Oximetry
Pleth Scale
HR Source
SpO2 Alarm
Normal
AUTO
Change size of plethysmograph
by changing scale. Select AUTO
to auto-scale waveform.
Beat Sound Volume 3
20
SpO2 Response
Normal Screen
Screen Setup
GE SpO2
Masimo SpO2
Nellcor SpO2
Pulse Oximetry
HR Source
SpO2 Alarm
AUTO
Adjust volume of
pulse/heart beat sound.
Beat Sound Volume
3
Normal Screen
Screen Setup
Pleth Scale
1X
Pulse Oximetry
Averaging
HR Source
SpO2 Alarm
Maximum
AUTO
Change SpO2 averaging time:
2~16s.
Beat Sound Volume 3
8s
Sensitivity
Normal Screen
Screen Setup
Pleth Scale
1X