Home oxygen health care or oxygen therapy is being accepted by many patients, but how to correctly choose, the correct use of many oxygen health care, oxygen therapy knowledge is not very clear, there are many misunderstandings, the following common problems to introduce. A, common oxygen products currently on the market are oxygen bags, oxygen cylinders, oxygen machines, oxygen power and other products, each product has its advantages and disadvantages, the choice of oxygen products to take into account the product’s oxygen therapy, practicality, convenience, safety, economy and other factors. 1.Oxygen bag is full of gas about 50 liters of oxygen, the highest pressure is 10.0kpa (additional pressure equivalent to 0.1 atmospheric pressure), if the nasal cannula oxygen, oxygen flow according to 2 liters / min, it is available for about 25 minutes, the first 10 minutes of high pressure oxygen will automatically flow out, the next 10 minutes due to pressure reduction need to squeeze the oxygen bag after the oxygen can flow. Full of gas, even if not placed for a few days oxygen will be partially lost. Advantages: low price, easy to inflate, less dangerous. Disadvantages: inconvenient to use, the oxygen content is small, can not be long-term preservation. 2. Oxygen cylinders commonly used are 2 liters, 3 liters, 4 liters, 6 liters, 8 liters, 10 liters, 15 liters, 40 liters and other models. When using oxygen flow can be adjusted arbitrarily. Different models of oxygen cylinders filled with oxygen (calculated by 130 atmospheres) after the gas content: 2 liters = 260 liters of oxygen, 3 liters = 390 liters of oxygen, 4 liters = 520 liters of oxygen, 6 liters = 780 liters of oxygen, 8 liters = 1040 liters of oxygen, 10 liters = 1300 liters of oxygen, 40 liters = 5200 liters of oxygen. Advantages: easy to use, oxygen flow rate can be adjusted arbitrarily, and can be stored for a long time. Disadvantages: large one-time investment (hundreds to thousands of dollars), inconvenient to carry. 3, oxygen machine The current market price ranges from a few hundred to a few thousand dollars, the service life of a few months to a few years, the basic use of molecular sieve oxygen production, oxygen will automatically flow out after the machine, without any additives, but the outflow is not pure oxygen, oxygen concentration and flow is inversely proportional, that is, the greater the flow, the lower the oxygen concentration. Usually when the flow rate is 2 liters/minute, the oxygen concentration can reach about 90%. Advantages: easy to use, no need to change air. Disadvantages: expensive, maintenance inconvenience after the failure, oxygen is not pure oxygen, not suitable for carrying. 4. Oxygen power and other chemical oxygen agent Oxygen power market price of several hundred yuan, the amount of oxygen production depends on the amount of chemical agents, generally two bags of oxygen agent can produce 20-40 liters of oxygen, individuals feel that there is an odor, once the oxygen agent into the chemical reaction can not be terminated in the middle, even if you do not suck oxygen can not be recovered. Advantages: suitable for traveling and carrying. Disadvantages: small oxygen flow, short duration, usually expensive consumables, very inconvenient to use. 5. Negative oxygen ion generator can produce a certain amount of negative oxygen ions after turning on the machine, the unstable characteristics of the indoor air can play a sterilizing effect. Generally speaking, it is difficult to change the concentration of indoor oxygen, so rely on negative oxygen ion generator to treat hypoxic diseases lack of theoretical basis, it is difficult to play the role of imaginary preventive health care. It is suitable for indoor air disinfection for patients with chronic diseases who are bedridden or rarely go out, in order to improve air quality and reduce the chance of infection. Advantages: easy to use, can play a role in purifying the air in the living room. Disadvantages: can not improve the concentration of oxygen in the room, and can not play a role in the health care treatment of hypoxic diseases. Second, the commonly used oxygen inhalation method 1, nasal catheter or nasal plugs oxygen This method is a commonly used traditional oxygen inhalation method, because some air is inhaled at the same time, so the actual inhalation is not pure oxygen, its oxygen concentration is about 30 ~ 40% (related to the size of oxygen flow). In addition, oxygen still flows out continuously when exhaling, so it causes half of the oxygen to be wasted. 2.Ordinary open mask oxygen inhalation There is only one oxygen inlet tube, through the opening on the mask for exhaust, the inhalation is also not pure oxygen, the oxygen concentration is basically the same as the nasal cannula oxygen inhalation (30-40%), which also causes half of the oxygen waste. 3. Atmospheric pressure closed mask oxygen inhalation (portable hyperbaric oxygen) This oxygen inhalation needs to be connected with oxygen cylinder, the mask is fully closed, the oxygen inhaled is pure oxygen of one atmosphere (0.1MPa), the oxygen concentration is 100%, it is suitable for patients with oxygen deficiency without carbon dioxide storage, because only oxygen will come out when inhaling, so it will not cause oxygen waste, it is very suitable for home health care treatment for patients with cardiovascular and cerebrovascular diseases. It is ideal for home health care treatment for patients with cardiovascular diseases. The above diseases are recommended to use nasal catheter or nasal plug “low flow intermittent oxygen”, oxygen flow 1~2 liters/minute, because these diseases are accompanied by different degrees of CO2 retention in addition to hypoxia, oxygen flow Excessive oxygen flow and high concentration will cause a decrease in lung function, which is not conducive to the discharge of CO2. 2. Cardiovascular system diseases The common ones are coronary heart disease (angina pectoris), heart attack, arrhythmia, cardiac insufficiency, congenital heart disease, rheumatic heart disease, etc., whether in remission or in attack, in addition to hypoxia, there is generally no CO2 retention, so it is recommended to use “normal pressure closed mask oxygen inhalation (portable hyperbaric oxygen)”. The partial pressure of oxygen inhaled is much higher than that of ordinary nasal catheter or nasal plug oxygen inhalation, which has not only health care effect but also therapeutic effect. The duration of each oxygen inhalation depends on the condition, it is recommended that each oxygen inhalation be 10-30 minutes, otherwise it is difficult to reach the corresponding oxygen content in the body. 3, cerebrovascular system diseases Commonly, there are cerebral infarction, cerebral blood supply deficiency, cerebral trauma, cerebral hemorrhage, neurovascular headache, etc. Generally, there is no CO2 storage, so it is recommended to use “atmospheric pressure closed mask oxygen inhalation (portable hyperbaric oxygen)” to improve cerebral hypoxia to the maximum extent. It is recommended that the duration of oxygen intake be 10-30 minutes each time. 4.Students, pregnant women, and brain workers are recommended to use “oxygen inhalation by closed mask under normal pressure (portable hyperbaric oxygen)”, and the recommended duration of oxygen inhalation is 10-30 minutes each time, preferably when the brain is most needed or when the feeling is the worst. 5.Advanced stage of cancer and other diseases, before the end of life The purpose of oxygen intake at this time is to relieve the patient’s pain, and any kind of oxygen intake can be adopted, and there is no restriction on the duration of oxygen intake. The so-called addiction includes mental dependence and somatic dependence. Mental dependence refers to the perverted craving after taking a certain drug and getting perverted pleasure from it; somatic dependence refers to the special pathophysiological changes of the central nervous system caused by repeatedly taking a certain drug, which needs to be continuously maintained with the drug to avoid the “withdrawal symptoms” after suddenly stopping the drug. “withdrawal symptoms”. Oxygen obviously does not have the above conditions, oxygen is a substance that people need to constantly take in from the air throughout their lives, and oxygen inhalation does not bring any special pleasure, nor does it produce “withdrawal symptoms” after stopping oxygen inhalation, it only improves the symptoms of oxygen deficiency, so oxygen inhalation will not become addictive and will not cause dependence. 2, oxygen inhalation will not easily cause oxygen poisoning Not only pure oxygen, as long as the oxygen concentration is higher than 21%, more than a certain safety time limit, there is indeed the possibility of poisoning, but how much oxygen is considered too much? It is not clear that there is a safe time limit for oxygen inhalation, and it is not the case that people will be poisoned immediately after a few minutes or tens of minutes of oxygen inhalation as they think, and some people even think that they will be poisoned after a few sips of pure oxygen and have the fear of oxygen inhalation, which is not necessary at all. It is generally believed that oxygen poisoning may occur after about 10 days of continuous oxygen intake by ordinary nasal catheter (oxygen concentration of 30%-40%) and about 8 hours of continuous oxygen intake by face mask (oxygen concentration of 100%). In addition, the occurrence of oxygen poisoning is related to the length of time of oxygen intake, but also to the physical state, age, emotion, temperature and other factors at that time. Generally, oxygen inhalation at home or routine oxygen treatment in hospital is far within the safe range and will not cause oxygen poisoning. 3.Oxygen inhalation is not only for those who are dying. Oxygen deficiency is closely related to the development of many diseases, and correcting oxygen deficiency is an important part of the treatment process of many diseases. How to improve hypoxia? It can be done through the following ways: (1) vasodilators: through vasodilating, increasing blood flow and improving hypoxia, which is the most widely used treatment method, such as coronary heart disease and cerebral insufficiency. (2) Blood transfusion: increase the number of red blood cells through blood transfusion, thus increasing the oxygen-carrying capacity of blood and improving hypoxia. (3) Drugs: Improves hypoxia by increasing the utilization of oxygen in the body. (4) Artificial hibernation: to improve hypoxia by decreasing basal metabolic rate and reducing oxygen consumption. (5) Oxygen inhalation: increase the oxygen intake through oxygen inhalation, thus directly increasing the oxygen content in the blood to improve hypoxia. It can be said that oxygen inhalation is the most direct, most economical, fastest, with few negative effects, a practical and reliable effective way. The traditional concept of oxygen absorption, that people are only given oxygen therapy when their lives are in danger, but in fact, oxygen as a means of treatment, we can treat it as a drug, take coronary heart disease as an example, the purpose of oral vasodilators is to increase blood flow to improve hypoxia, oxygen absorption is to directly increase the oxygen content in the blood to improve hypoxia, different ways but only one purpose, is to improve hypoxia, if taken If you take “oxygen absorption by atmospheric pressure closed mask (portable hyperbaric oxygen)”, in addition to the combination of oxygen, the main increase is the amount of dissolved oxygen, the oxygen content in the body is increased by 4.8 times than the suction air, and about 3.0 times than the ordinary nasal catheter oxygen absorption, a single from the perspective of improving hypoxia than the drugs to come more directly and faster, drugs can not make the blood flow increased by 3 to If you insist on inhaling oxygen for 10-15 minutes daily, it has a positive health care and therapeutic effect on hypoxic cardiovascular and cerebrovascular diseases. Five, oxygen precautions 1, oxygen cylinders should be stored in a place with good ventilation, away from fire and fire sources. 2, oxygen is a combustion agent, in the absence of fire fire source, no matter how high the oxygen concentration will not cause a fire, when the indoor oxygen concentration exceeds 30%, when the fire source will bring some danger. 3, most of the family is the use of nasal cannula or ordinary open mask oxygen, exhaling oxygen is still a constant flow of oxygen, leakage to the face around, in addition to the exhaled gas in the oxygen concentration is also relatively high, the two caused by the increase in local oxygen concentration, so when using around as far as possible to avoid causing static electricity or electric sparks operation, such as smoking, combing, plugging and unplugging power supply, access to cell phones, the use of electric razors, etc.. 4, oxygen forbidden oil, strictly forbidden to use oil cloth or alcohol scrubbing oxygen absorbing equipment. 5, preventive health care oxygen should be placed after exercise, after meals or during the concentration of brain, when increased oxygen consumption is likely to lead to cardiac and cerebral hypoxia, to emergency treatment for the purpose of oxygen as long as the body does not feel well. 6.It is recommended that each oxygen intake time: more than 30 minutes for nasal catheter or nasal plug, more than 10 minutes for normal pressure mask, otherwise it is difficult to reach the corresponding oxygen content in the body. 7.Oxygen can be opened moderately or window can be opened for ventilation when the conditions allow, so that the indoor oxygen concentration is controlled below 25% to avoid danger. 8.Oxygen cylinders should be tested every three years by professional institutions (pressure test). 9, the use of oxygen equipment found to have problems, first cut off the oxygen source (close the valve, cut off the power supply, etc.), and timely find professional repair, oxygen maintenance tools to be dedicated. 10. After the end of oxygen intake should be promptly close the oxygen cylinder valve or oxygen machine power supply.