The pulse oximeter is an indispensable medical device that measures arterial oxygen saturation (SpO₂) using a probe, which is simply attached to a finger. However, correct handling and attachment of the probe is extremely important for accurate measurement.

As the probe is attached directly on the patient's skin for a long time, correct attachment helps ensure the protection of the patient’s skin and safety in use.
Here, we will describe the features of the SpO₂ probes of Nihon Kohden and explain the key points of patient-friendly SpO₂ probe attachment.

The Mechanism of Measuring SpO₂

Because the level of the signals detected using light is very low, sufficient attention must be paid to the thickness of the measurement site on which the probe is attached and the condition of its placement. The following points should help you perform a good measurement.