What are the reasons for low continuous blood oxygen saturation, and what should be done?

Patient's question:

No

Doctor's answer:

Blood oxygen refers to the oxygen in the blood. Humans rely on oxygen to survive. After oxygen is inhaled through the lungs, it enters the bloodstream through capillaries and is delivered to various organs or cells in the body for use. The higher the oxygen content in the blood, the better the human metabolism.
Of course, high blood oxygen levels are not necessarily a good sign. The blood oxygen in the human body has a certain saturation level, and both excessively low and excessively high levels can cause health problems!