Do people need to observe blood oxygen saturation at home? How normal is the blood oxygen saturation? How to read? Is the oximeter necessary for home?
Q: How normal is the blood oxygen saturation? How to read?
A: Blood oxygen saturation (SpO2) refers to the concentration of blood oxygen in the blood, which is an important physiological parameter of the respiratory cycle. Monitoring arterial oxygen saturation (SaO2) can estimate lung oxygenation and hemoglobin oxygen carrying capacity. The oxygen saturation of normal human arterial blood is 95-98%, and that of venous blood is 75%. The oximeter is very small and can be measured by holding one finger. If the oximeter is used at home, the reading is not less than 90%, which is normal.
Q: Do I need to observe blood oxygen saturation at home?
A: It should be divided into two parts. If there are no symptoms such as chest tightness or breathlessness, it generally indicates that the blood oxygen saturation is normal and can not be monitored. If there are clinical symptoms, such as fever, chest tightness, or difficulty breathing, isolation at home is not recommended and hospitalization is required.
Q: What happens when the blood oxygen saturation changes?
A: Most people with pneumonia infected with new coronavirus still have fever. Only a few people may not have a fever. Therefore, it cannot be said that blood oxygen saturation is more valuable than fever. Besides, most mild patients have fever, but not yet. Changes in the degree of blood oxygen saturation will only occur if there are more lung lesions.
Q: Does it matter if there are no obvious symptoms such as fever and cough, but shortness of breath and fatigue?
A: We found that a very small number of people have this kind of performance. They have no fever and cough, and the throat swab nucleic acid is positive, indicating the presence of a recessive infection. If you are short of breath and fatigue, you need to continue to observe, pay attention to rest, drink plenty of water and eat a light diet. If there is low fever or a little dry cough, it is best to be able to screen for new coronavirus through a pharyngeal swab.
Q: Do I need a oximeter at home?
Answer: The oximeter is not a routine need at home, and there is no need to panic buying. Most families do not have an oximeter to observe whether they have fever, cough, chest tightness and other clinical symptoms and changes.