Acare AH-TA, Инструкция по эксплуатации

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AH-TX Series Handheld Pulse Oximeter Instruction Manual
23
Chapter 5 Measuring SpO2
5.1 Introduction
The measurement of oxygen saturation of arterial blood (also known as
peripheral oxygen saturation, usually shortened to SpO2) relies on the
principles of light spectra and volume tracing. An LED in the oximeter emits
light rays through the body, wherever the probe is used, e.g. through the
finger, at two different specific wavelengths. Each of these is selectively
absorbed by oxygenated hemoglobin and deoxyhemoglobin in the blood. An
optical receptor measures the changes in the light intensity after the light
passes through the capillary network and estimates the ratio of oxygenated
hemoglobin and the total hemoglobin.
5.2 Safety Information
Warning:

Only use the SpO
2
probes specified in this manual. Follow the
SpO
2
probe instructions for use and adhere to all warnings and
cautions.

When a trend toward patient deoxygenation is indicated, blood
samples should be analyzed by a laboratory co-oximeter for a full
diagnosis of the patient’s condition.