Lung cancer is a common lung malignant tumor. The vast majority of lung cancer originates from the bronchial mucosa epithelium. Refers to a disease in which the growth of cells in the lung tissue is out of control. Is lung lung oxygen inhalation beneficial?

　　 1. What should be paid attention to inhalation of oxygen in lung cancer patients

　　Observe the effect of oxygen therapy closely. If the symptoms such as dyspnea are reduced or relieved, and the heartbeat is normal or close to normal, it indicates that oxygen therapy is effective. Otherwise, you should find the cause and deal with it in time.

　　High concentration of oxygen supply should not be too long. It is generally considered that oxygen inhalation concentration is greater than 60% for more than 24 hours, then oxygen poisoning may occur.

　　Oxygen therapy should pay attention to heating and humidification. Maintaining 37°C temperature and 95% to 100% humidity in the respiratory tract is a necessary condition for the normal removal function of the mucociliary system, so inhaled oxygen should be humidified The bottle and the necessary heating device to prevent the inhalation of dry and cold oxygen to stimulate the damage to the airway mucosa, cause sputum dryness and affect the "scavenger" function of cilia.

　　 To prevent pollution and catheter blockage, the nasal congestion, oxygen delivery catheter, humidification and heating device, ventilator piping system, etc. should be regularly replaced and cleaned and disinfected to prevent cross infection. Oxygen inhalation catheters and nasal congestion should always be checked for secretion blockage and replaced in time to ensure effective and safe oxygen therapy.

　　2. Causes of lung cancer

　　Currently, smoking is considered to be the most important high-risk factor for lung cancer. There are more than 3,000 chemicals in tobacco, including multi-chain aromatic hydrocarbon compounds (such as: Benzopyrene) and nitrosamine have strong carcinogenic activity. Multi-chain aromatic hydrocarbon compounds and nitrosamines can cause bronchial epithelial cell DNA damage through a variety of mechanisms, causing the activation of oncogenes (such as Ras gene) and the inactivation of tumor suppressor genes (such as p53, FHIT gene, etc.), which in turn causes cell Transformation, eventually cancerous.

　　 3. Dissemination and metastasis of lung cancer

　　Direct spread

　　 Tumors near the periphery of the lung can invade the visceral pleura, and the cancer cells fall off into the pleural cavity to form implants Sexual transfer. Tumors that are central or close to the mediastinum can invade the visceral pleura, chest wall tissue, and mediastinal organs.

　　Blood metastasis

　　Cancer cells can be transferred to any part of the body after returning to the left heart with the pulmonary veins. Common metastases are liver, brain, lung, skeletal system, adrenal gland, pancreas, etc. organ.

　　Lymphatic metastasis

　　Lymphatic metastasis is the most common metastatic route of lung cancer. The cancer cells invade the lymph nodes around the bronchus and pulmonary blood vessels, firstly invade the adjacent lung segment or the peribronchial lymph nodes, then reach the hilum or subcarinal lymph nodes, then invade the mediastinum and paratracheal lymph nodes, and finally involve the supraclavicular or cervical lymph nodes .