Oxygen saturation, or SpO2, is the amount of oxygen-carrying hemoglobin in the blood relative to the amount of hemoglobin not carrying oxygen.
The body needs a certain level of oxygen in the blood to function efficiently.
Blood oxygen levels are measured with a pulse oximeter, which clips onto a finger or other part of the body.
Normal arterial blood oxygen saturation levels in humans are 97–100 percent.
If the level is below 90 percent, it is considered low and called hypoxemia.
Low oxygen levels can lead to respiratory or cardiac arrest.
Oxygen therapy may be used to assist in raising blood oxygen levels.
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SpO2, also known as oxygen saturation, is a measure of the amount of oxygen-carrying hemoglobin in the blood relative to the amount of hemoglobin not carrying oxygen. The body needs there to be a certain level of oxygen in the blood or it will not function as efficiently.
Understanding SpO2 and Normal Oxygen Levels - HomeCare Magazine
Your blood oxygen level is a measure of how much oxygen your red blood cells are carrying. Your body closely regulates your blood oxygen level. Maintaining the precise balance of oxygen-saturated blood is vital to your health.
Most children and adults don’t need to monitor their blood oxygen level
Blood Oxygen Levels: What Is a Normal Level? - Healthline
Your blood oxygen level (blood oxygen saturation) is the amount of oxygen you have circulating in your blood.
Oxygen is essential to life, and our bodies need a certain amount of oxygen to function properly.
Blood Oxygen Level: What It Is & How To Increase It
Oxygen saturation is the fraction of oxygen-saturated hemoglobin relative to total hemoglobin (unsaturated + saturated) in the blood. Normal arterial blood oxygen saturation levels in humans are 97-100 percent, and if the level is below 90%, it is considered low and called hypoxemia. Oxygen saturation can be measured in different tissues, such as venous oxygen saturation, tissue oxygen saturation, and peripheral oxygen saturation, and is typically measured at a fingertip using a pulse oximeter.
Oxygen saturation (medicine) - Wikipedia
Pulse oximetry is a test used to measure the oxygen level (oxygen saturation) of the blood. It is an easy, painless measure of how well oxygen is being sent to…
Pulse Oximetry | Johns Hopkins Medicine