The normal arterial oxygen saturation of human body is 95- 100%. If the level is lower than 90%, it is considered as hypoxemia. Arterial blood oxygen below 80% may damage organ functions, such as brain and heart, which should be solved in time. Persistent low oxygen levels may lead to respiratory or cardiac arrest. ?
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People with low oxygen saturation will have symptoms such as shortness of breath, insufficient energy supply and fatigue. In life, it is necessary to enhance lung function through exercise to maintain normal oxygen saturation. Exercise to improve cardiopulmonary function includes proper running, swimming and brisk walking.
Monitoring arterial oxygen saturation can estimate oxygenation and oxygen carrying capacity of hemoglobin in lung. The arterial blood oxygen saturation of healthy people is not less than 98%, and the venous blood oxygen saturation is 75%.
Measurement method of blood oxygen saturation: The traditional measurement method of blood oxygen saturation is to collect blood in the hospital, make electrochemical analysis on the blood, and finally calculate the bleeding blood oxygen saturation through the familiarity with the oxygen partial pressure PO2, or use the photoelectric sensor on the finger.
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