User Manual for Handheld Pulse Oximeter
30
lamps, bilirubin lamps, fluorescent lights, infrared
heating lamps, or direct sunlight.
Vascular dyes or external used color-up product
such as nail enamel or color skin care
Excessive patient movement
Placement of a sensor on an extremity with a blood
pressure cuff, arterial catheter, or intravascular line
Exposure t o the chamber with High pressure
oxygen
There is an arterial occlusion proximal to t he sensor
Blood vessel contraction caused by peripheral vessel
hyperkinesias or body temperature decreasing
5 Factors causing low SpO
2
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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