Hyperbaric oxygen can treat many diseases clinically with peculiar and definite efficacy, and people find it incredible, why? Maybe reading the following text, you can have an understanding of hyperbaric oxygen treatment. Increase blood oxygen tension , increase the amount of physical dissolved oxygen The dissolution of gas in liquid under high pressure follows Henry’s law, that is, the amount of gas dissolved in liquid is proportional to the partial pressure of that gas, the higher the partial pressure, the more the dissolved amount, otherwise the opposite. Hyperbaric oxygen increases the physical dissolved oxygen concentration in the blood significantly, up to about 20 times the normal pressure. For example, 0.3ml/100ml of dissolved oxygen in the blood when breathing air, 6.4ml/100ml at 3ATA HBO, when the physical dissolved oxygen in the blood is sufficient to meet the body’s oxidative metabolic needs (5.6ml/100ml for tissues in general). Increase in tissue oxygen stores The body’s oxygen stores per kilogram of tissue can be increased from 13ml to 53ml when exposed to HBO at 300kPa (3ATA). Due to sufficient oxygen supply, the injured tissues and blood vessels grow earlier, more and faster under HBO than under the same conditions of normoxia, which facilitates the establishment of collateral circulation and injury repair. Increased oxygen diffusion and effective diffusion distance The effective diffusion radius of oxygen from capillaries is 30 μ m at atmospheric pressure, which increases to 100 μ m at 3ATA of HBO. This effect of HBO is effective in interrupting the vicious cycle of swelling-ischemia (hypoxia)-more swelling when the body’s tissues are edematous for various reasons. Vasoconstriction and improved capillary permeability Under HBO conditions, vasoconstriction and improved capillary permeability in many tissues and organs of the body result in reduced exudation. For example, under HBO at 2ATA, cerebral blood flow is reduced by 21% and intracranial pressure is reduced by 36%. Due to the significant increase in blood oxygen content, the local oxygen supply remains significantly increased at normobaric pressure. This effect of HBO is uniquely effective for cerebral edema, pulmonary edema, and tissue cell edema due to various traumas, inflammation, ischemia, and hypoxia. Increased vertebral artery blood flow An 18% increase in vertebral artery blood flow at 2ATA oxygen pressure, combined with high tension oxygen, has a strong stimulating effect on the reticular superior system and has a significant effect on promoting brain injury repair, awakening of comatose patients and maintenance of vital functions. It has important therapeutic value for brain resuscitation, hypoxic encephalopathy, and recovery of brain function in ischemic cerebrovascular diseases Inhibition of growth and reproduction of anaerobic bacteria HBO can inhibit the growth and reproduction of various bacterial microorganisms, and anaerobic bacteria lack various oxidative enzymes. In the environment of HBO, the tissues produce too much peroxide, so that the anaerobic bacteria cannot survive. Therefore, HBO is effective in treating anaerobic bacterial infections such as gas gangrene, tetanus, and actinomycetes. Reduce blood viscosity and promote thrombus absorption The anticoagulation system is activated in HBO environment, thrombin element index, platelet coagulation is reduced, clotting time is prolonged, whole blood viscosity decreases, thrombus appears early softening, dissolution, embolus becomes smaller or disappears, so that blocked blood vessels are recanalized. It is suitable for the treatment of vascular embolic diseases. It has the dual effect of sensitization and synergy with radiotherapy and chemotherapy. During HBO treatment, the internal oxygen supply to the tumor is improved, thus stimulating a large number of cells in the quiescent phase to enter the proliferative phase and enhancing the sensitivity of radiotherapy and chemotherapy. Promote the disappearance of gas bubbles in the body Using the physical effect of pressure, the formed gas bubbles in the body are compressed until redissolved, while oxygen gradually replaces the inert gas inside the bubbles. Thus, HBO is a radical treatment for decompression sickness, air embolism and cystic pneumonia of the intestinal wall. Continuous effect When oxygen is administered at atmospheric pressure, the oxygen concentration inhaled is at most 40%, and the effect of oxygen stops once the oxygen is stopped; while when hyperbaric oxygen is administered, the oxygen concentration inhaled is at least 85%, and the patient’s blood oxygen level increases 17-20 times compared to atmospheric pressure, and the oxygen can continue to function in the body for several hours after the hyperbaric oxygen is stopped. After CO and other gas poisoning, cardiopulmonary and cerebral resuscitation, acute cerebral and pulmonary edema, amputation, extensive contusion and crush injury, HBO treatment is given 2-3 times a day, which can basically maintain a high tension oxygen concentration in the body for 24h.