What does SPO2 mean?
May 16, 2023
Source: Cainiu Health
Dr. Yang Shuwen
Introduction
SPO2 refers to blood oxygen saturation, which indicates the extent to which hemoglobin in the blood is bound to oxygen. The normal range is 95%–99%. Monitoring blood oxygen saturation helps doctors determine whether a person is in a state of hypoxia, as it indirectly reflects whether the body is lacking oxygen and the severity of the oxygen deficiency.
Generally, SPO2 refers to blood oxygen saturation. A detailed explanation is as follows:
SPO2 is the abbreviated English term for blood oxygen saturation. Blood oxygen saturation indicates the extent to which hemoglobin in the blood is bound to oxygen. The normal range is 95%–99%. Monitoring blood oxygen saturation helps doctors determine whether a person is in a state of hypoxia, as it indirectly reflects whether the body is lacking oxygen and the severity of such deficiency. If a patient is undergoing hyperbaric oxygen therapy, their body may absorb normal or even excessive amounts of oxygen, potentially causing blood oxygen saturation to reach 100%. If blood oxygen saturation falls below the normal range, it indicates that the body is experiencing hypoxia. When blood oxygen saturation drops below 90% at rest, medical attention should be sought promptly regardless of whether symptoms such as shortness of breath or cyanosis are present. If blood oxygen saturation falls below 80%, it may lead to multi-organ damage.
Patients with hypoxia should avoid strenuous exercise during treatment, as this could worsen oxygen deficiency. Additionally, regular monitoring of blood oxygen saturation is recommended to ensure it remains within the normal range.
