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文件编号：NR-TP-0715-008
8.1
Overview
Blood oxygen saturation (SpO2) is the percentage of oxyhemoglobin (HbO2) capacity bound
by oxygen in the blood in the total hemoglobin (Hb) capacity that can be combined, that is,
the concentration of oxygen in the blood.
The principle for monitoring the pulse SpO2 is to fix the probe fingerstall on the patient's
finger, use the finger as a transparent container for hemoglobin, use 660nm wavelength red
light and 880nm near-infrared light as the incident light, maximum output power is 300 mw,
measure the light transmission intensity through the tissue bed, and calculate the
concentration of hemoglobin and SpO2.
The passing lights depend on a variety of factors, most of which are constant. However, one
of these factors, the arterial blood flow, changes with time, as it is pulsating. By measuring
the light absorbed during pulsating, it is possible to obtain the arterial blood SpO2. Detection
pulsation can give a "plethysmography" wave and pulse rate signal.
The main screen displays "SPO2" value and "plethysmography" wave.
This monitor applies to measure SPO2 of adults (>18 years), pediatric (30 Days to18 years).
Contact SPO2 probe to Patient's finger to get "SPO2" value and "plethysmography" wave
SPO2 function of this monitor has been calibrated in factory.
8.2
Safety Information
Warning
Please use SpO2 sensor specified in this Manual, operate in accordance with the
Manual, and observe all warnings and precautions.
Before monitoring, check whether the sensor cable is normal. When SPO2 sensor
cable is unplugged from the socket, the screen will display [SPO2Sensor OFF]
error message, and trigger an audible and visual alarm simultaneously.
If the sensor or sensor packaging has signs of damage, do not use this SPO2 sensor;
return it to the manufacturer.
Chapter8
SpO2
版本： 1.0
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