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The concentration of oxygen saturation means the saturation level of
hemoglobin which can transport the oxygen of the arterial blood. The
current transport level for the capacity of hemoglobin to transport the
oxygen is expressed as a percentage.
(1) How to Measure SpO2
◈ While the MRI is used, measurement using the sensor may cause
severe burning. If this occurs during normal use, remove the
product immediately from the patient.
◈ Do not place the probes at the site where the arterial catheter or
the venous infusion set is connected.
◈ For neonates, measurement should be made outside the
incubator using the disposable sensor. (Humid conditions in the
incubator may affect the measurement, resulting in inappropriate
data.)
◈ Strong light interferes with accurate measurement. In this case,
cover the sensor with an opaque material.
◈ For patients with thick or dark skin, or with weak blood flow and
weak signs, the oxygen concentration level may appear lower
than it is.
◈ In patients with abnormalities in the peripheral nervous system
including hypothermia, hypovolemia, hyperdynamia of vessels or
reduction in heart rate, the vital signs may not read properly due
to these abnormalities.
◈ In patients with an abnormal increase in oxyhemoglobin or
methemoglobin, the data for SpO2 will not be accurate.
◈ Check if the sensors release light, if the sensors are positioned
properly opposite, and if the light release to the patient’s tissue.
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