User’s manual of CLEO Patient Monitor
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SPO2 MONITORING
SPO2 MONITORING PRINCIPLE
SPO2 SENSOR INSTALLLATION
SPO2 WAVEFORM SETUP
SPO2 PARAMETER SETUP
MEASUREMENT LIMITATIONS
SPO2 ERROR MESSAGES
NELLCOR INFORMATION
SPO2 MONITORING PRINCIPLE
Arterial oxygen saturation is measured by a method called pulse oximetry. It is a
continuous, non-invasive method based on the different absorption spectra of reduced
hemoglobin and oxyhemoglobin. It measures how much light, sent from light sources on
one side of the sensor, is transmitted through patient tissue (such as a finger or an ear), to
a receiver on the other side.
The amount of light transmitted depends on many factors, most of which are constant.
However, one of these factors, the blood flow in the arteries, varies with time, because it is
pulsating. By measuring the light absorption during a pulsation, it is possible to derive the
oxygen saturation of the arterial blood. Detecting the pulsation gives a PLETH waveform
and pulse rate signal.
2
2
2
□
SpO
2
：
It is the arterial blood oxygen saturation lever measuring by oximeter.
□
SaO
2
：
It is the oxygen saturation of arterial blood
：
It is the oxygen saturation of the jugular blood.
SPO2 SENSOR INSTALLLATION
1. Insert the plug of SpO
2
sensor into the SpO
2
socket at the bottom of panel of monitor.
Make sure that the salient of plug must direct to the notch of socket when inserting of
unplugging, otherwise the measurement will not be reliable and the sensor connector
will be damaged.
2. Wear the finger-probe on the finger; make sure that the finger tip is the same direction
as the finger direction indicated on the probe.
SPO2 WAVEFORM SETUP
Touch the SpO
2
Waveform area directly. The tree diagram is as below:
PLETH
Module Type
Sweep Color
Sweep Speed
Figure 5: Tree Diagram for Pleth Menu
The menu has the following settings:
Pulse oximeter can overestimate the SpO
2
value in the presence of HB-CO, Met-HB or
dye dilution chemicals.
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