How to get accurate blood oxygen saturation value in multi-parameter monitor

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　　Factors affecting blood oxygen saturation:

　　1. The sensor position is not installed properly or the patient has violent movement: it will affect the extraction of pulse signal.

　　2. The interference of the strong light environment on the signal: when the strong light irradiates the blood oxygen probe, the light receiver can deviate from the normal range and the measurement is not accurate.

　　3. Poor circulation of the final pin: such as shock and low finger temperature; it will lead to the decrease of arterial blood flow at the measured site, making the measurement inaccurate or undetectable.

　　4. Blood pressure on the same arm or compression on the same side: affect the pulse.

　　5. Applying nail polish to nails: it will affect the transmission of light, making measurement difficult.

　　Solution:

　　1. The patient's nails should not be too long, and must not have any stains, dirt or onychomycosis.

　　2. Connect the blood oxygen finger clip sensor correctly. If the patient's finger feels uncomfortable after a long period of blood oxygen monitoring, the other finger should be replaced for monitoring.

　　3. Patients and medical personnel should not collide and pull the probe and lead to prevent damage and affect the use.

　　4. The position of the blood oxygen probe should be separated from the blood pressure measuring arm because blood flow is blocked during blood pressure measurement, and it is possible that blood oxygen is not measured at this time.

　　5. Avoid strong light exposure, affecting the measurement

　　6. Monitor manufacturers avoid movement interference and affect perfusion