16 Facts About Pulse oximetry

Pulse oximetry is a noninvasive method for monitoring a person's oxygen saturation.

Reflectance pulse oximetry is a less common alternative to transmissive pulse oximetry.

Pulse oximetry is particularly convenient for noninvasive continuous measurement of blood oxygen saturation.

Pulse oximetry is useful in any setting where a patient's oxygenation is unstable, including intensive care, operating, recovery, emergency and hospital ward settings, pilots in unpressurized aircraft, for assessment of any patient's oxygenation, and determining the effectiveness of or need for supplemental oxygen.

Patients with COVID-19, pulse oximetry helps with early detection of silent hypoxia, in which the patients still look and feel comfortable, but their SpO2 is dangerously low.

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Pulse oximetry is not a complete measure of circulatory oxygen sufficiency.

Pulse oximetry technologies differ in their abilities to provide accurate data during conditions of motion and low perfusion.

Pulse oximetry is used for the screening of sleep apnea and other types of sleep-disordered breathing which in the United States are conditions more prevalent among minorities.

Pulse oximetry oximeters used for diagnosis of conditions such as COVID-19 should be Class IIB medical grade oximeters.

However, Nihon Kohden suspended the development of pulse oximetry and did not apply for a basic patent of pulse oximetry except in Japan.

Pulse oximetry was of particular value in the neonatal unit where the patients do not thrive with inadequate oxygenation, but too much oxygen and fluctuations in oxygen concentration can lead to vision impairment or blindness from retinopathy of prematurity .

Motion artifact can be a significant limitation to pulse oximetry monitoring, resulting in frequent false alarms and loss of data.

Since then, pulse oximetry manufacturers have developed new algorithms to reduce some false alarms during motion, such as extending averaging times or freezing values on the screen, but they do not claim to measure changing conditions during motion and low perfusion.

Signal extraction technology pulse oximetry performance has been shown to translate into helping clinicians improve patient outcomes.

The CCHD workgroup recommended newborn screening be performed with motion tolerant pulse oximetry that has been validated in low perfusion conditions.

High-resolution pulse oximetry has been developed for in-home sleep apnea screening and testing in patients for whom it is impractical to perform polysomnography.