Blood oxygen refers to the oxygen in the blood. The normal blood oxygen saturation of the human body is above 95%. The higher the oxygen content in the blood, the better the metabolism of the body. But it does not mean that higher is better. Too high will cause cell aging; too low will cause insufficient oxygen supply to the body, dizziness, sleepiness, lack of energy at work, irritability and other symptoms. When blood oxygen is lower than 90% It is necessary to pay attention to rest, less than 80% may cause damage to the heart and brain function.
So who needs to monitor this indicator in daily life? What types of equipment can easily monitor blood oxygen indicators?
1. Who needs to monitor blood oxygen
1). Suspected or home patients of COVID-19
Decreased blood oxygen concentration is one of several typical symptoms of new coronary pneumonia, and it is also an effective indicator to distinguish pneumonia from the common cold. In patients with lung infections, blood oxygen saturation tends to drop, and this also applies to new coronary pneumonia. At present, the domestic epidemic has been basically controlled, but the overseas epidemic is still spreading, and the support capacity of the medical system has collapsed, and many patients can only be isolated at home. In my country, with the high incidence of influenza in autumn and winter and the possibility of the expansion of imported cases from abroad, there is the possibility of a resurgence of the epidemic; Zhong Nanshan also said that controlling infection is a key to prevention and control this winter and next spring. Wearing masks and washing hands are very important. The outbreak should continue this winter or next spring, with localized outbreaks likely. So once you find that your blood oxygen saturation suddenly drops in your daily life, you need to pay enough attention and seek medical attention in time; the 24-hour blood oxygen monitoring function of the Tianhuan smart health monitoring watch is a good blood oxygen saturation detector;
2). Patients with chronic diseases such as diabetes, heart disease, and respiratory disease
Patients with chronic diseases such as diabetes, heart disease, and respiratory disease, especially the elderly, have the characteristics of low cure rate and control rate, high complication rate, disability, and fatality rate. They are accompanied by patients for life and require long-term care. Good habits can slow down the development and deterioration of the disease. Daily monitoring of physical signs and data to prevent micro-duplication is particularly important.
In addition to the conventional self-monitoring indicators such as heart rate, blood pressure, and body temperature. As more and more smart wearable devices have added the function of blood oxygen monitoring, blood oxygen monitoring has also become popular. For patients with chronic diseases, the monitoring of this indicator has also become easier. By recording these indicators, not only can you better monitor your own health outside the hospital, but you can also go to the hospital for follow-up examinations in time according to the deterioration of the indicators. At the same time, the trend of these data changes is also a very important basis for doctors to diagnose and adjust treatment plans.
3). Sports enthusiasts
Like patients with chronic diseases, it is very necessary for sports enthusiasts to monitor their vital signs when exercising to adjust the intensity and frequency of exercise. Especially during high-intensity exercise, it is easy to have insufficient oxygen supply. In severe cases, it will lead to acute ischemia, cardiac arrest and interruption of cerebral blood in the athlete's myocardium, resulting in exercise-induced sudden cardiac death and sudden cerebral death. Exercise intensity is very important;
Wear a smart watch and use the real-time monitoring function of the smart watch. Once the heart rate is abnormal, an early warning prompt will be given immediately, reminding the exerciser to adjust the exercise intensity in time to ensure exercise safety;
In addition, healthy ordinary people can also wear wearable devices and use their blood oxygen monitoring to provide timely health warning services.
Then the principle of blood oxygen measurement of wearable devices on the market is similar. What is the specific principle to achieve? First of all, we need to understand the formation principle of blood oxygen;
Oxygen is an indispensable condition for human survival. From the time we inhale air, oxygen is transported to various organs of our body through blood to supply oxygen. Of course, oxygen also needs transportation. The “car” it takes is called hemoglobin, a protein in red blood cells responsible for transporting oxygen.
A single hemoglobin (horn-like filament) can carry four oxygen molecules (blue); at this time, the "full" hemoglobin is called oxygen-saturated hemoglobin. Then, the blood oxygen monitoring of wearable smart watches actually measures a percentage, that is, blood oxygen saturation, which is the proportion of oxygen-saturated hemoglobin in all hemoglobin.
Wearable devices that support blood oxygen measurement have red and infrared light emitters. Through these two light sources, the wearable device can measure the proportion of oxygen-saturated hemoglobin in the blood.
When hemoglobin is fully loaded with 4 oxygen molecules, the color will be brighter red. And when the oxygen molecules "get off", the hemoglobin also becomes dim. This difference in color is also reflected in the reflectance of infrared and infrared light sources.
Oxygen-saturated hemoglobin is reddish. When irradiated by red light, the reflectivity of red light is high, while the reflectivity of infrared light is low. On the contrary, when hemoglobin is deficient in oxygen, the reflectivity of red light is low, and the reflectivity of infrared light is low. higher reflectivity. By analyzing the different reflectances of these two light sources, the blood oxygen saturation can be obtained.
https://www.arshinemedical.com/news/principle-and-significance-of-blood-oxygen-mea-60832928.html
