When your blood oxygen level goes below 95%Trusted Source, you’re at risk of hypoxemia. Hypoxemia is the medical term for low blood oxygen levels.
This is often cause for concern, as it may lead to complications that affect the brain, kidneys, or heart.
You may experience symptoms like:
- shortness of breath
- chest pain
- coughing or wheezing
- confusion
- headache
- rapid heartbeat
If your blood oxygen level falls below 80–85%Trusted Source, visual and cognitive changes may start to develop.
At 67%, you’re at risk of developing symptoms of cyanosis. The hallmark sign of this is a blue discoloration of your nail beds, skin, and mucus membranes.
Cyanosis may also lead to respiratory failure, which can be life threatening. If you’re experiencing symptoms, get medical attention immediately.
It’s important to know what your regular oxygen level is, especially if you have a chronic lung condition. A doctor may provide recommendations as to what range of oxygen levels are acceptable for you.
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