Household oxygen generators can't be used casually.

Interviewed expert: Zhang Yi, deputy chief physician of hyperbaric oxygen department of Beijing Chaoyang Hospital affiliated to Capital Medical University.

Our reporter Shi She

Zhang Wei introduced that the household oxygen generator uses the principle of pressure swing adsorption to purify, separate, screen and humidify the air, and finally obtains more than 90% high-concentration fresh oxygen. It has a certain effect on people suffering from hypoxia, such as patients with respiratory diseases, cardiovascular and cerebrovascular diseases, altitude hypoxia and other diseases, elderly people, white-collar workers, students who have been engaged in mental work for a long time, and people with weak health and poor immunity. Zhang Wei said: "Some people think that patients with COPD who need long-term oxygen inhalation need oxygen therapy at home. In addition, if the oxygen saturation is not low and there are no signs of hypoxia, there is no need to take oxygen. This is not the case. " The brain is the organ that needs the most oxygen. The brain weight of normal people accounts for 2%~3% of the total body weight, but the oxygen consumption accounts for more than 20%~30% of the total oxygen consumption of human body, and the oxygen consumption is 250~400 ml per minute. Many middle school students and white-collar workers use their brains too much, and some sub-health people who have dizziness, fatigue and long-term insomnia may not lack oxygen in their surrounding tissues, but their brain tissues need oxygen for health care under high-intensity mental work. In addition, according to the theory of hypoxia and aging, with the increase of age, the oxygen content in the human body will gradually decrease, so the elderly can also do oxygen therapy and health care.

However, the effect of domestic oxygen generator is controversial. At present, some products on the market are often under the banner of "beauty beauty", "promoting fetal development" and "improving sub-health status", as if they can "cure all diseases". Zhang Wei said that these propaganda do have some exaggerated elements. Regarding the promotion of fetal development, beauty and beauty said that unless the fetus is hypoxic, oxygen inhalation is generally not needed. For example, oxygen inhalation should be carried out under the guidance of an obstetrician. Regarding "oxygen inhalation beauty", there are indeed patients who do hyperbaric oxygen therapy in clinic who report that their skin is better than before. At present, there are some studies on the promotion of collagen synthesis by hyperbaric oxygen, but they are not the same as ordinary household oxygen generators and need further verification.

The advantage of domestic oxygen generator is that it is convenient and easy to carry, but its oxygen therapy effect is incomparable to that of conventional hyperbaric oxygen therapy. The oxygen pressure of hyperbaric oxygen is more than ten times that of ordinary family oxygen therapy machine, and it has strong permeability and can enter hypoxic cells to improve hypoxia. Generally, the oxygen concentration of household oxygen generator is about 90%, and the oxygen flow rate is 3~5 liters/minute, which can not achieve the purpose of hyperbaric oxygen treatment, and can only meet the daily health care of patients with cardiopulmonary diseases, the elderly and sub-healthy people. There are signs that home oxygen therapy. In addition to mastering the use method, it is also necessary to evaluate the curative effect after oxygen inhalation and adjust the oxygen concentration according to the curative effect. It is recommended to consult a doctor before purchasing and do it under the guidance of a doctor.

For the commonly used domestic oxygen generator, Zhang Yi suggested that patients with chronic obstructive pulmonary disease should take oxygen for more than 15 hours a day, and the oxygen flow should be controlled at around 1.5 liter/minute. If the oxygen flow rate is too high, it will lead to carbon dioxide retention and aggravate the condition. Other sub-health people who can take oxygen therapy can take oxygen for half an hour to 1 hour according to the doctor's evaluation, and they can take oxygen after meals or when using their brains. Patients with long-term insomnia can take oxygen before going to bed, and the oxygen flow can be controlled at 3 liters/minute. Finally, we need to remind you that you should pay attention to safety and stay away from open flames when using household oxygen generators.