Which hypoxia is associated specifically with low levels of oxygen reaching the bloodstream?

Hypoxic hypoxia is characterized by low levels of oxygen in the environment, which directly affects the oxygen available for transport through the bloodstream. This type of hypoxia occurs when there is insufficient oxygen in the air that is breathed in, thereby leading to a decrease in arterial oxygen saturation. The body's ability to efficiently absorb oxygen from the lungs into the bloodstream is impaired due to this lower availability of oxygen in the surrounding atmosphere, particularly at high altitudes or in situations where oxygen is scarce.

In this context, while other forms of hypoxia may involve issues with oxygen transport or utilization at the cellular level, it is hypoxic hypoxia that specifically refers to the problem stemming from insufficient oxygen provision to the blood itself.