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Pulse Oximetry

Pulse Oximetry is a procedure used to measure the oxygen level (or oxygen saturation) in the blood. It is considered to be a non-invasive, painless, general indicator of oxygen delivery to the peripheral tissues (such as the finger, earlobe, or nose).

How does it work?

Oxygen in the air is breathed into the lungs. The oxygen then passes into the blood where the majority of oxygen attaches to haemoglobin (a protein located inside the red blood cell) for transport to the bloodstream. The oxygenated blood circulates to the tissues.

Pulse oximetry technology utilises the light absorptive characteristics of haemoglobin and the pulsating nature of blood flow in the arteries to aid in determining the oxygenation status in the body. A click-like device called a probe is placed on a body part, such as a finger or ear lobe, to measure the blood that is still carrying or is saturated with oxygen. The probe houses a light source, a light detector and a microprocessor which compares and calculates the differences in the oxygen-rich versus oxygen poor haemoglobin. This information helps assess the amount of oxygen being carried in the blood and evaluate the need for supplemental oxygen.

For more information or to book a Pulse Oximetry Test, call The Lung Centre on 07 5564 7775 or fill out the contact form below.

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