Ohmeda Biox 3700 - Page 27

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1. "SGNL" SIGNAL STRENGTH INDICATOR — The Signal Strength Bar
Graph provides a visual indication of the received pulsatile
signal. The higher the bar, the stronger the signal is. The
height of the bar is determined by several factors including
tissue perfusion at the probe site, and the capability of the
tissue under test to pass the incident light. If the bar falls
to a^height less than half scale, the Alarm Message "LO QUALITY
SGNL" appears above the waveform on the Graphic Display and the
Sa02 may not be accurate. For example, the probe may be impro
perly attached to the patient. Perfuse (massage) the test site
and reapply the probe, or select an alternate test site.
2. "S" SLOW RESPONSE -- The oximeter is automatically in the Slow
Response Mode (6 second averaging Sa02 time) when it is turned
on. Hold the WAVEFORM key for 3 seconds and the Status Message
FAST RESPONSE SELECTED" momentarily appears on the Graphic
Display. The letter "F" appears in place of the letter "S"
alongside of the plethysmographic waveform, and the oximeter is
now in the Fast Response Mode (3 second averaging Sa02 time). To
return to the Slow Response Mode, hold the WAVEFORM key for 3
seconds. The Status Message "SLOW RESPONSE SELECTED" momentarily
appears on the Graphic Display. The letter "S" appears in place
of the letter "F" on the Graphic Display.
3. "BT" BATTERY — This Status Message is displayed when the
oximeter operates on battery power. The oximeter runs for
approximately one and a half hours on battery power.
"LO
BT" LOW BATTERY - This Status Message is displayed when the
battery is getting low. Approximately 5 to 10 minutes of opera
tion time is left when this Status Message appears on the
Graphic Display. See page 85 for recharging instructions.
4. Plethysmographic Waveform —
The "photo-plethysmographic" waveform is displayed after the
Status Message "SYSTEM OPERATIONAL" appears on the Graphic
Display. It Is a representation of the blood volume change of
the hemodynamic system assuming no other factors (e.g. motion
artifact) are present. The plethysmographic waveform auto-
scales or automatically adjusts according to the size of the
signal.
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