Lepu Medical AIView 12V, Operator'S Manual, Page: 120 / 292

11-1
Chapter 11 Monitoring Pulse Oxygen Saturation
(SpO
2
)
11.1 Introduction
Pulse oxygen saturation (SpO
2
) monitoring is a non-invasive optical
technique used to measure the amount of oxygenated hemoglobin
(HbO
2
) and pulse rate by measuring the absorption of selected
wavelengths of light. The light generated in the emitter side of the
sensor is partly absorbed when it passes through the monitored
tissue. The amount of transmitted light is detected in the detector
side of the sensor. When the pulsative part of the light signal is
examined, the amount of light absorbed by the hemoglobin is
measured and the pulse oxygen saturation can be calculated. The
monitor is calibrated to display functional oxygen saturation.
SpO
2
monitoring is intended for adult, pediatric and neonatal
patients.
11.2 Safety Information
Warning
Check the SpO
2
sensor and cable before use. Do NOT use the damaged
SpO
2
sensor.
Warning
DO NOT stare at the light of SpO
2
sensor (infrared light is invisible) when it
is switched on, for the infrared light may do harm to the eyes.
Warning
Inspect SpO
2
sensor application site every one to two hours to ensure skin
quality and correct optical alignment, and change the measuring site
periodically if necessary. If the skin quality changes, move the sensor to
another site.
Warning
SpO
2
measuring site must be examined more carefully for some special
patients. Do NOT place the SpO
2
sensor on the finger with edema or
fragile tissue.
Warning
Avoid placing the SpO
2
sensor on the same extremity with an arterial
catheter, blood pressure cuff, or intravascular infusion line, otherwise the