Revive vitality with hyperbaric oxygen therapy—a green healing approach.

Oxygen is the source of life and the foundation of healing. Hyperbaric oxygen therapy is the quickest and most effective way to improve tissue hypoxia, and it is now widely used in the emergency treatment of acute hypoxic conditions as well as in the systematic management of chronic hypoxic diseases. Hyperbaric oxygen therapy is green, safe, and well-tolerated; it is not only a rehabilitative or adjunctive treatment but also a fundamental therapeutic approach that deserves even broader application. Hyperbaric oxygen therapy opens a golden pathway that enables the human body to rapidly absorb oxygen, allowing it to penetrate deeply into cells, enhance cellular biological functions, and promote the healthy functioning of tissues and organs. During hyperbaric oxygen therapy, individuals are placed in a special environment with atmospheric pressure higher than one atmosphere and breathe in high-concentration oxygen. As a result, the blood’s oxygen-carrying capacity increases, physiological conditions in various organs and tissues improve, the body’s meridians become unobstructed, and overall vitality is enhanced. Hyperbaric oxygen therapy is not merely a rehabilitation or adjunctive treatment—it is also a fundamental therapeutic approach.

1. Increase blood oxygen content and raise blood oxygen partial pressure.

Blood oxygen transport pathway:

1. It directly binds to hemoglobin, forming oxyhemoglobin—a process known as chemical dissolution. Approximately 14 grams of hemoglobin are present in every 100 milliliters of blood; under normal atmospheric pressure, it can bind about 19 milliliters of oxygen (with a hemoglobin oxygen saturation of 97%). This is the primary mechanism for oxygen transport under normal atmospheric pressure.

2. Dissolved in the physical state: Under normal atmospheric pressure, only 0.3 mL of oxygen is dissolved in every 100 mL of blood. Although this method transports a small amount of oxygen, the oxygen first gets utilized by the tissues; only after that does the oxygen dissociate from oxyhemoglobin, dissolve into the blood, diffuse into the interstitial fluid, and become available for use by tissue cells.

Under high atmospheric pressure, hemoglobin oxygen saturation rapidly reaches 100% and can no longer bind additional oxygen. Meanwhile, the amount of oxygen dissolved physically in plasma increases steadily with rising oxygen partial pressure. At 3 standard atmospheres (ATA), the amount of oxygen dissolved physically can reach 6.6 mL—22 times the amount found in air breathed at normal atmospheric pressure. In other words, at 3 ATA, the oxygen dissolved purely physically alone is entirely sufficient to supply oxygen to tissue cells.

Therefore, hyperbaric oxygen therapy can be used as an emergency measure to compensate for reduced blood flow in conditions involving hemoglobin loss or inactivation, such as carbon monoxide poisoning, blood loss, and other forms of hemoglobinopathies.

2. Increase blood oxygen diffusion and enhance tissue oxygen reserves.

According to the laws of gas physics, the rate of gas diffusion is directly proportional to the pressure difference between gases. The greater the pressure difference, the faster the diffusion rate, the larger the amount of gas diffused, and the farther the diffusion distance. During hyperbaric oxygen therapy, the partial pressure of oxygen in the alveoli increases significantly, leading to a greater amount of oxygen diffusing from the alveoli into the arterial blood compared to normal atmospheric pressure conditions. Consequently, the oxygen content in arterial blood also rises markedly. Moreover, the amount of oxygen diffusing from the arterial capillaries into tissue cells increases as well, extending the diffusion distance and substantially boosting the oxygen reserves in various tissues. Under normal atmospheric pressure, when breathing air, the effective diffusion radius of oxygen in the body’s capillaries is 30 micrometers; however, at an oxygen pressure of 3 ATA, the effective diffusion radius can increase to 100 micrometers—more than three times the effective diffusion radius observed during breathing air at normal atmospheric pressure. As a result, the oxygen content and partial pressure in the tissues and body fluids surrounding the capillaries also rise.

Therefore, hyperbaric oxygen therapy is used to treat conditions in which tissue edema leads to an increased diffusion distance—for example, cerebral edema and pulmonary edema. It can also be employed to treat diseases caused by capillary damage or vascular obstruction that result in impaired oxygen supply, such as cerebral thrombosis, burns, limb crush injuries, and post-traumatic circulatory disorders.

3. Constricts all blood vessels in the body

Under hyperbaric oxygen therapy, blood oxygen tension increases, triggering autoregulation of blood vessels and causing contraction of vascular smooth muscle. In brain tissue, when cerebral blood vessels constrict, cerebral blood flow decreases. However, due to the increased levels of both chemically bound oxygen and physically dissolved oxygen in the blood, the partial pressure of oxygen in brain tissue and cerebrospinal fluid actually rises compared to that under normal atmospheric pressure. Therefore, hyperbaric oxygen therapy is highly effective in the emergency treatment of cerebral hypoxia and cerebral edema. By increasing blood oxygen content and raising blood oxygen tension, it effectively alleviates the hypoxic state of brain tissue. At the same time, as cerebral blood vessels constrict and cerebral blood flow declines, cerebral edema is reduced, intracranial pressure is lowered, and thus the vicious cycle of cerebral hypoxia—cerebral edema—elevated intracranial pressure is broken.

It is particularly worth noting that under hyperbaric oxygen therapy, blood flow in the carotid arterial system decreases, while blood flow in the vertebral arteries actually increases. Consequently, the partial pressure of oxygen in the brainstem regions of the reticular activating system rises relatively, which is conducive to the arousal of comatose patients and the maintenance of their vital functions.

4. Promote fibroblast proliferation and collagen synthesis.

When the local tissue oxygen partial pressure is between 5 and 10 mmHg, fibroblast proliferation and collagen fiber formation are inhibited. Under hyperbaric oxygen therapy, the oxygen partial pressure in the blood and in the extracellular fluid increases, stimulating the proliferative activity of vascular fibroblasts and the formation of collagen fibers, promoting the generation of new blood vessels, accelerating the establishment of collateral circulation, and effectively correcting and improving tissue hypoxia. Enhanced aerobic metabolism leads to sufficient production of adenosine triphosphate, which favors protein synthesis and promotes the growth of fresh granulation tissue and epithelium.

Therefore, hyperbaric oxygen therapy is used to treat a variety of conditions, including skin grafting, replantation of severed fingers (or toes), cerebral thrombosis, refractory ulcers, aseptic osteonecrosis, chronic osteomyelitis, and poor fracture healing.

5. Inhibit the growth of anaerobic bacteria

Anaerobic bacteria can only grow in environments that are either anaerobic or have a low oxygen partial pressure. When the oxygen partial pressure reaches 250 mmHg, the production of exotoxins by Clostridium perfringens is also inhibited. Therefore, at an oxygen pressure of 2.5 to 3.0 ATA, all anaerobic bacteria are unable to grow and multiply within the body.

Therefore, hyperbaric oxygen therapy has a special effect on gas gangrene and tetanus.

6. Eliminate bubbles in the body

The pressure of a gas is inversely proportional to its volume. Under hyperbaric oxygen therapy, gas bubbles are compressed. At 2 ATA, the bubbles shrink by half; at 3 ATA, they shrink to one-third of their original size. Blood vessels that had been blocked by these bubbles regain their blood supply. Meanwhile, the oxygen in the bloodstream displaces the nitrogen within the bubbles and is utilized by the body, causing the bubbles to quickly disappear. Therefore, hyperbaric oxygen therapy is particularly effective in treating air embolism and decompression sickness.