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Pulse Oximetry (SpO2)
Welch Allyn 70 Propaq Encore Reference Guide
4. Press SIZE to adjust the waveform size for best viewing (1x, 2x, 4x, or 8x).
5. Adjust the placement of the sensor until a good SpO
2
waveform is displayed. A
waveform with artifact may cause erroneous oxygen saturation readings.
6. Set alarm limits according to your hospital’s standards.
7. If patient movement interferes with measurements, consider the following possible
solutions:
• be sure the sensor is secure and properly applied
• use a new sensor with fresh adhesive backing
• select a different type of sensor
• move the sensor to a less active site
Perform SpO
2
Monitoring with Nellcor Option
1. Attach the sensor to the patient according to the sensor manufacturer's instructions,
observing all warnings and cautions.
2. When using a sensor extension cable, inspect the cable before use. Replace it if it
shows any signs of wear, breakage, or fraying. Plug the sensor into the cable and plug
the cable into the Propaq monitor, or plug the sensor directly into the monitor.
3. If the monitor SpO
2
receptacle has a locking ring, lock the connector in place by
turning the locking ring clockwise until it stops. For other connectors, make sure the
plug is all the way in.
To help minimize false alarms, the Propaq monitor briefly delays or "holds off"
triggering both audible and visual alarms for limit violations for SpO
2
% and
Pulse Rate for 10 seconds. After the alarm hold-off period begins, if the
monitor detects that the patient’s vital sign has returned to acceptable limits,
the monitor cancels the alarm hold-off. The next time a vital sign limit is
violated, the monitor starts a new hold-off period.
The “averaging time” for SpO
2
measurements is fixed at eight seconds.
Warning Use only Nellcor accessories and sensors with the monitor with
Nellcor SpO
2
option as listed in the Welch Allyn Products and Accessories
booklet (810-0409-XX).