For people with hypoxia symptoms, breathing pure oxygen does play a therapeutic role, such as when people appear dizziness, vertigo, chest tightness, shortness of breath and other conditions, you can inhale oxygen in order to replenish the oxygen; major accidents in the critically ill breathing pure oxygen, can be for the rescue to win the precious time; cardio-cerebral vascular bad people adhere to the inhalation of oxygen, can be a critical moment in the prevention of accidents, life-saving. Healthy people can breathe pure oxygen?In the middle of the 19th century, British scientist Paul Burt found in the experiment that animals breathing pure oxygen will be poisoned. If a person is in an environment with an oxygen concentration of more than 50%, all the cells will experience "oxygen toxicity".
Human lungs in less than 6 hours of pure oxygen environment may not cause very serious consequences, but too long will destroy the lung capillary barrier, resulting in pulmonary edema, pulmonary bruising and hemorrhage, seriously affecting the breathing, and then organs due to lack of oxygen damage. People need a certain concentration of carbon dioxide to stimulate the respiratory center, if the concentration of oxygen is too high and the concentration of carbon dioxide is too low, the oxygen will have an inhibitory effect on the respiratory center, causing respiratory failure. Nitrogen accounts for about 78% of the air. Nitrogen acts as an inert diluent that regulates the solubility of oxygen in the blood and, together with carbon dioxide, controls the rate of all biochemical reactions in which oxygen is involved. This is the great significance of the stabilization of the levels of the various components of oxygen, nitrogen and carbon dioxide in the atmosphere.
Breathing pure oxygen promotes the aging of life. There are countless chemical reactions occurring all the time in the human body. Oxygen reacts with unsaturated fatty acids, a reaction that does not require enzyme catalysis to take place, and the concentration of oxygen directly affects the speed of the reaction. The reaction can destroy the storage of these unsaturated fatty acids phospholipids, phospholipids are the main components of the cell membrane, phospholipids are destroyed after cell death. If the concentration of oxygen is too high, the rate of reaction between oxygen and unsaturated fatty acids will be greatly increased, significantly accelerating the rate of cell death. In addition, the destruction of oxygen on the cell also lies in its ability to produce free radicals, cancer-inducing. Practice has shown that the destruction of cell cultures is to put it in an environment oversaturated with oxygen.
The body's tissues cannot tolerate too much oxygen. Inhaling too much oxygen into the body can react with oxidizing enzymes in the cells to generate hydrogen peroxide, which is toxic, and then generate lipofuscin. Lipofuscin is a toxin that accelerates cellular aging. It is produced in the heart, which can cause cardiomyocytes to age and heart function to decline; it is produced in the walls of blood vessels, which can cause blood vessels to sclerosis; it is produced in the liver, which can cause liver function to weaken; it is produced in the brain, which can cause memory loss and mental decline; and it is produced in the skin, which can cause the formation of age spots. Ventilators in hospitals are used for first aid and treatment, mainly for patients with serious illnesses, such as those who have just had major surgery, or who have experienced respiratory failure in a major accident, and are used to save the patient's life. It provides the power to deliver gases to meet the respiratory metabolic needs of the organs. There are few side effects to using a ventilator, and it is not addictive. But if a healthy person breathes pure oxygen for a long time, not only can it not promote health, but it will jeopardize health.