User Manual for Wrist Oximeter
-35-
4 Factors causing low SpO
2
Measuring value
(pathology reason)
Hypoxemia disease, functional lack of HbO
2
Pigmentation or abnormal oxyhemoglobin level
Abnormal oxyhemoglobin variation
Methemoglobin disease
Sulfhemoglobinemia or arterial occlusion exists near
sensor
Obvious venous pulsations
Peripheral arterial pulsation becomes weak
Peripheral blood supply is not enough
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