What Is the Normal Sleeping Oxygen Saturation Level?

What Is the Normal Sleeping Oxygen Saturation Level?

The normal sleeping oxygen saturation level is above 90 percent, according to Central California Ear Nose & Throat Medical Group. When oxygen levels drop below this, oxygen desaturation occurs. This is often caused by decreased breathing.

Obstructive sleep apnea, or OSA, is a common cause of oxygen desaturation, states CCENT. No specific cause is known, but many factors appear to contribute to a blockage of the airway. These including a long palate, large tonsils, and a large or high-riding tongue. The tongues of people with receding chins are often located further back in the throat, as well. Obesity sometimes aggravates the condition.