What is the normal SaO2 (oxygen saturation) percentage in arterial blood gas analysis?

The normal oxygen saturation (SaO2) percentage in arterial blood gas analysis is considered to be greater than 95%. This value indicates that the majority of hemoglobin in the blood is saturated with oxygen, which is crucial for efficient oxygen delivery to tissues throughout the body.

When the SaO2 is above 95%, it suggests that an individual's respiratory and cardiovascular systems are functioning properly, allowing for optimal oxygen transportation. Values below this threshold may indicate hypoxemia, or inadequate oxygen levels, which can lead to significant physiological distress and may require intervention.

Values of 90%, 92%, and 95% are all considered to be lower than the ideal SaO2, especially for healthy individuals at sea level. While some patients may tolerate lower oxygen saturation levels due to underlying health conditions, a SaO2 of greater than 95% is the standard reference point for assessing adequate oxygenation in a non-smoking, healthy adult population.