Certain health conditions may cause hypoxemia by affecting your lung function. Some of these include:
- COPD, including chronic bronchitis and emphysema
- acute respiratory distress syndrome
- asthma
- collapsed lung
- pneumonia
- anemia
- congenital heart defects
- heart disease
- pulmonary embolism
Blood disorders and problems with your circulatory system may also prevent your blood from picking up oxygen and transporting it throughout your body.
The ways in which these conditions and disorders lower your blood oxygen levels can be classified in five different waysTrusted Source:
ventilation/perfusion (V/Q) mismatch
shunt
diffusion impairment
hypoventilation
low environmental oxygen, which typically occurs at high altitudes
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