User Manual for Wrist Oximeter
-33-
passes. Due to that oxygenated hemoglobin (HbO
2
) and
deoxygenated hemoglobin (Hb) have different absorption
character in the spectrum range from red to infrared light
(600nm~1000nm wavelength), by using these
characteristics, SpO
2
can be determined. SpO
2
measured
by this oximeter is the functional oxygen saturation -- a
percentage of the hemoglobin that can transport oxygen. In
contrast, hemoximeters report fractional oxygen saturation
– a percentage of all measured hemoglobin, including
dysfunctional hemoglobin, such as carboxyhemoglobin or
metahemoglobin.
Clinical application of pulse oximeters:
SpO
2
is an
important physiological parameter to reflect the respiration
and ventilation function, so SpO
2
monitoring used in
clinical becomes more popularly, such as monitoring the
patient with serious respiratory disease, the patient under
anesthesia during operation, premature and neonate. The
status of SpO
2
can be determined in time by measurement
and find the hypoxemia patient earlier, thereby preventing
or reducing accidental death caused by hypoxia effectively.
