User's Manual

Contents
14-3
SpO
2
Overview
Pulse oximetry allows continuous noninvasive monitoring of a patient’s
hemoglobin oxygen saturation. The oximetry sensor contains two light emitting
diodes (LEDs) that transmit specific wavelengths (typically 660 and
940 nanometers) of light that are received by a photo detector.
Oxygen saturated blood absorbs light differently compared to unsaturated blood.
The amount of light absorbed by the blood can be used to calculate the ratio of
oxygenated hemoglobin to total hemoglobin in arterial blood. The monitor displays
this ratio as percent SpO
2
. Normal values range from 95 to 100%.
WARNING:
• A pulse oximeter should NOT be used as an apnea monitor.
• A pulse oximeter should be considered an early warning
device. If a trend towards patient deoxygenation is
indicated, blood samples should be analyzed by a
laboratory co-oximeter to completely understand the
patient's condition.
• When used according to the manufacturers’ instructions,
sensors have no adverse effect on tissues.
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Setting Up SpO2 Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Dual SpO2 Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Display Detail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Ensuring Accurate Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Using the Sensorwatch Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Setting and Adjusting Alarm Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Selecting Data Averaging Period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Using SpO2 with Intra-Aortic Balloon Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Adjusting Tone Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Modifying Waveform Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Viewing Pulse Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Restoring User-Defined Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Suspending/Resuming SpO2 Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recording SpO2 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
SpO2 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13