I believe you well know that this little equipment can be used to test blood oxygen levels. So what is blood oxygen? What is safe? Is it necessary to monitor it when doing sports?
Today let's talk about this concept, which is listed into six vital signs, together with body temperature, pulse, respiration, blood pressure, and pain.
What is blood oxygen level?
The oxygen we take into the lungs will eventually combine with the hemoglobin in the red blood cells, and then be distributed to our various organs and tissues. Only in this way can the cells survive and work normally.
Unfortunately, not every hemoglobin will be selected. Hemoglobin that has not been bound with oxygen is left alone.
In clinical care it is mostly (or always) produced via a calculation via formula, and measured in mL/dL. Simply put, it is used to measure the proportion of red blood cells that carry oxygen.
So what blood oxygen level is normal?
Most of the time, every hemoglobin can find its own oxygen partner, and it is normal for a healthy person's blood oxygen level to remain between 95-100%.
What happens if the blood oxygen level is low?
A low blood oxygen level indicates low oxygen concentration in the blood. All cells in the body depend on oxygen for their livelihoods. If you can't get enough oxygen, it will affect almost every part of the body. In severe hypoxia, it can be fatal in a few minutes.
When the blood oxygen saturation is low, you will initially feel tired, short of breath, inability to concentrate thinking or concentration, and feel drowsy.
If it continues, symptoms of cyanosis may appear. The hallmark of this condition is the blueness of the nail bed, skin, and mucous membranes.
Cyanosis is an emergency and can be life-threatening. If you experience this symptom, you should seek medical attention immediately.
Picture source: verywell.com
How to notice abnormal blood oxygen level in time?
The symptom of cyanosis, that is, the tongue and mucous membranes appear blue, is the most reliable predictor, but it occurs when the blood oxygen level is about 75%.
But this situation is already very serious, so it must be found as soon as possible. When the blood oxygen level is 80-85%, the visual and cognitive abilities will become weaker.
A large range of outliers between 75%-95% requires reliable prediction methods. For high-risk groups, the safest way is to continuously measure blood oxygen levels.
For the convenience of life, it is a good choice to use wearable technology to track your blood oxygen saturation data.
Under what circumstances need to monitor blood oxygen?
1. High Altitude
Compared with plain areas, the ambient oxygen in high-altitude areas is thinner, and people living there are prone to hypoxemia.
2. Patients with lung diseases such as chronic obstructive pulmonary disease and pulmonary embolism
These diseases may prevent the lungs from fully inhaling oxygenated air and exhaling carbon dioxide, resulting in decreased blood oxygen saturation.
3. The elderly
The elderly have degraded cardiopulmonary function and are prone to insufficient oxygen supply.
If I exercise irregularly, do I need to monitor my blood oxygen?
For ordinary people who usually exercise less, suddenly increase their exercise volume, or exercise without professional guidance, if possible, they can have a blood oxygen test.
In the domestic research reports on sudden exercise-related death, some cases showed that the heart did not have qualitative changes and abnormalities. The cause of death may be that the exercise load exceeded its tolerance, the heart circulatory system was overwhelmed, and the blood volume and oxygen demand required increased suddenly, while the supply has been relatively reduced.
In this state of insufficient blood oxygen supply, the athlete's myocardium will experience acute ischemia, cardiac arrest and cerebral blood interruption, and then sudden exercise-induced cardiac death and brain death.
Therefore, exercise should be done step by step, and do what you can. Especially after the festivals, do not "retaliate training", the amount of overloaded exercise may exceed your body's tolerance.
If you do not exercise regularly and want to consume as many calories as possible in less frequent exercises, it is recommended to use some equipment to check data such as heart rate and blood oxygen. If possible, you can also check blood sugar. Feelings of low blood sugar and low blood oxygen are sometimes indistinguishable from exercise fatigue, which requires data assistance.
Of course, it is recommended to exercise regularly, do what you can, and don't force yourself too much.