Oxygen inhalation is the basic method to treat various lung diseases complicated with hypoxemia. Indications of ltot: After treatment, the patients with chronic respiratory failure in the stable stage of chronic obstructive pulmonary disease have PAO 27.33 kPa (55 mmHg), or SA (O2) 88%, or PAO 27.33 ~ 9.33 kPa (50 ~ 70 mmHg) with secondary polycythemia (hematocrit 55%), pulmonary hypertension and cor pulmonale. Followed by patients with nocturnal hypoxemia. Ltot can correct the hypoxia state of patients with chronic hypoxia without obviously aggravating CO2 retention, slowing down the deterioration of lung function, reducing pulmonary artery pressure and delaying the progress of cor pulmonale. After 4-6 weeks of treatment, it can reduce hematocrit, reduce blood viscosity, increase cardiopulmonary oxygen supply, improve cardiac function and improve survival rate. However, ltot's disease can also bring discomfort to patients. The main reasons are not used to the way of oxygen therapy, not used to the taste of oxygen, affecting sleep, inconvenient movement and family economic difficulties. Therefore, in ensuring accurate, rapid, safe and effective oxygen therapy nursing, our nurses should increase comfort, reduce noise, improve and improve the compliance of oxygen therapy, and bring psychological and physiological satisfaction to patients as much as possible, which makes ltot nursing more important and urgent. Nursing oxygen inhalation of ltot is the basic means to treat various lung diseases complicated with hypoxemia. Indications of ltot: After treatment, the patients with chronic respiratory failure in the stable stage of chronic obstructive pulmonary disease have PAO 27.33 kPa (55 mmHg), or SA (O2) 88%, or PAO 27.33 ~ 9.33 kPa (50 ~ 70 mmHg) with secondary polycythemia (hematocrit 55%), pulmonary hypertension and cor pulmonale. Followed by patients with nocturnal hypoxemia. Ltot can correct the hypoxia state of patients with chronic hypoxia without obviously aggravating CO2 retention, slowing down the deterioration of lung function, reducing pulmonary artery pressure and delaying the progress of cor pulmonale. After 4-6 weeks of treatment, it can reduce hematocrit, reduce blood viscosity, increase cardiopulmonary oxygen supply, improve cardiac function and improve survival rate. [1] However, ltot also brings discomfort to patients. The main reasons are not used to the way of oxygen therapy, not used to the taste of oxygen, affecting sleep, inconvenient movement and family economic difficulties. Therefore, in ensuring accurate, fast, safe and effective oxygen therapy nursing, our nurses can increase comfort, reduce noise, improve and improve the compliance of oxygen therapy, and bring psychological and physical satisfaction to patients as much as possible, which makes ltot nursing more important and urgent. 1. Health education of oxygen therapy 1. 1 Oxygen therapy should belong to a drug therapy, but people underestimate the ability of oxygen to treat hypoxemia, and if it is administered improperly, it will lead to death. Our nurses should understand the methods of oxygen supply and the purpose of patients' oxygen inhalation, and also teach patients how to receive correct, safe and comfortable oxygen therapy, understand the basic knowledge of oxygen use, matters needing attention in use, explain possible problems, and understand the significance of arterial blood gas analysis and arterial oxygen saturation. Strengthening the popular science education of oxygen therapy runs through the whole process of oxygen therapy nursing 1.2 Safety guidance should strengthen patients' awareness of safe use of oxygen. Oxygen itself will not burn, but it is a combustion-supporting gas. Pay attention to heat, fire, oil and electric shock when using. Smoking is strictly prohibited in the ward. When using oxygen cylinders, check the pressure of oxygen at any time, and change bottles when it is lower than 5Mpa to avoid danger when inflating. Purpose of oxygen supply 1.3 It is very important to provide proper oxygen therapy for patients with dyspnea. If you receive high concentration of oxygen, some patients with hypoxia may die. For example, patients with chronic obstructive pulmonary disease can't inhale high-concentration oxygen, because patients' sensitivity to carbon dioxide in blood is reduced, and hypoxia in blood can stimulate the respiratory center more than carbon dioxide. If you inhale high concentration of oxygen at this time, it will inhibit the respiratory center, leading to carbon dioxide retention and even death. 1.4 Strictly implement the concentration of oxygen therapy. Long-term high concentration will cause oxygen poisoning, respiratory depression and other side effects. Studies have shown that if the oxygen concentration is controlled in the range of 24%-28%, even if the course of treatment exceeds 10 years, oxygen poisoning will not occur. [2 3] For patients who need ltot, the longer they receive oxygen therapy every day, the higher the curative effect, but it is unrealistic to take oxygen for 24 hours. At present, it is agreed that oxygen inhalation at least 15 hours a day can make the arterial oxygen partial pressure greater than 8.0kPa, so as to obtain the effect of oxygen therapy. [4] Nurses often find that patients increase the oxygen flow without authorization when they patrol the ward at night, thinking that this can improve the symptoms of hypoxia. Some patients refuse oxygen therapy after the symptoms of hypoxia have improved slightly. This kind of wrong behavior should be stopped in time to make patients understand, so education in this area is particularly important. 2. Selection of oxygen supply catheter 2. 1 Disposable single-lumen oxygen supply catheter (nasal plug type) This oxygen supply catheter has obviously less stimulation to nasal mucosa than the previous oxygen supply method of nasal catheter, but it is not easy to fix, and fixing with tape affects the appearance and causes skin discomfort. 2.2 Disposable single-cavity oxygen inhalation catheter (nose hook type) This oxygen inhalation catheter makes up for the above points. It uses soft plastic to block the nose wing, so that the catheter is not easy to fall off. The disadvantage is that the single-cavity oxygen inhalation catheter can concentrate the oxygen flow on one nostril, and the soft plastic blocks the nostril, which can make the nasal mucosa congested and swollen for a long time and reduce oxygen therapy. 2.3 Disposable double-cavity oxygen inhalation catheter (earmuff type) It has two vent holes, and two nasal plugs are inserted into the nostrils to disperse the oxygen flow, so that the nasal catheter can be worn on the ear when wearing glasses. The length of the piston can be adjusted according to the length of the patient's face to increase stability and comfort. Please refer to the following website for the rest of the papers: /z/q70900940.htm? rq= 1 1954227 1。 ri = 3 & ampuid=289042294。 ch=w.xg.dllyjj