Difficult-to-heal wounds, such as diabetic foot ulcers, pressure injuries, and postoperative wound infections, often make patients miserable. Whether it is traditional dressing changes, antibiotic treatment, or other local care methods, it may be difficult to completely promote healing, resulting in long-term pain, increased risk of infection, and even the serious consequence of amputation. So, is there a more effective treatment?
Hyperbaric oxygen therapy (HBOT) is gradually becoming an important breakthrough in wound care. By allowing patients to inhale pure oxygen under high pressure, this therapy can significantly increase blood oxygen content, improve the repair ability of hypoxic tissues, accelerate new blood vessel formation, and help fight infection. For patients with chronic wounds such as diabetic foot ulcers, HBOT may be a key treatment option.
So, how does hyperbaric oxygen therapy promote tissue repair? What types of wound patients are best suited for this treatment? Today, Haohealthy will explore the role of HBOT in wound healing to help you understand whether it suits your needs.
Hyperbaric Oxygen Therapy (HBOT) is a medical treatment that allows patients to inhale pure oxygen in a pressurized environment to promote tissue repair and improve specific diseases.
Basic Principles
High-pressure environment:
The patient is in a closed chamber, and the air pressure is raised to 1.5~3 times the atmospheric pressure (usually 2~2.5 ATA), which is higher than normal.
High-concentration oxygen:
The patient inhales 95%~100% pure oxygen through a mask or helmet, which greatly increases the dissolved oxygen content in the blood and breaks through the conventional oxygen transport limitations.
Physiological effects:
High oxygen partial pressure can penetrate ischemic or edematous tissues, stimulate angiogenesis, inhibit anaerobic infection, reduce inflammation, and promote stem cell release.
In wound care, traditional methods usually include dressings, antibiotic treatment, and local debridement, which are mainly used to protect wounds, prevent infection, and promote the natural healing of skin tissue. However, for hypoxic wounds, especially diabetic foot ulcers, radiation ulcers, and severe burns, traditional care may not be able to achieve the desired therapeutic effect, and wound healing is slow or may even worsen.
Hyperbaric oxygen therapy (HBOT) shows obvious advantages in this regard. HBOT allows patients to inhale 100% pure oxygen under high pressure, which greatly increases the dissolved oxygen content in the blood. Oxygen can penetrate deep into hypoxic tissues that traditional treatments cannot reach, activate cell repair mechanisms, accelerate angiogenesis, and enhance the body's ability to resist infection.
| Traditional wound care | HBOT | |
| Oxygen supply method | Rely on blood circulation to naturally transport oxygen | Directly increase blood oxygen concentration and penetrate hypoxic tissues |
| Anti-infection ability | Dependence on antibiotics, prone to drug resistance | Improve the phagocytic ability of white blood cells and naturally inhibit bacteria |
| Angiogenesis | Rely on the body's recovery | Promote angiogenesis and accelerate tissue repair |
| Scope of application | Suitable for general superficial wounds | Especially suitable for hypoxic and chronic wounds |
| Healing Speed | May be slower, affected by individual factors | Can significantly speed up the healing process |
For patients with long-term wounds that do not heal well and for whom traditional methods are ineffective, HBOT can not only provide deeper oxygen support but also activate cell function and accelerate the wound-healing process. For this reason, it has become a treatment option recommended by more and more wound care experts.
Under normal pressure, oxygen is mainly transported by hemoglobin in red blood cells, but in ischemic and hypoxic conditions, oxygen supply is often insufficient. HBOT significantly increases the dissolved oxygen content in plasma by increasing the environmental pressure (usually 2-3 atmospheres) so that patients can breathe in a 100% pure oxygen environment. In this way, even if the oxygen-carrying capacity of hemoglobin is limited, oxygen can still dissolve in plasma and diffuse directly to damaged tissues, improving the local hypoxia of the wound and providing sufficient energy for cell repair.
Angiogenesis is the key to wound repair. HBOT can stimulate the release of endothelial growth factor (VEGF), promote the formation of capillaries, and establish a new microcirculatory system. This process is particularly important because, in chronic wounds such as diabetic foot ulcers and radiation damage, insufficient vascular oxygen supply is the main factor leading to long-term wound healing.
HBOT can reduce inflammatory responses and excessive accumulation of oxygen-free radicals, thereby alleviating chronic inflammatory states. At the same time, it can also enhance the phagocytic ability of white blood cells (macrophages and neutrophils), improve the body's ability to resist infection, enable the wound to clear pathogens faster and prevent the infection from worsening.
HBOT can activate fibroblasts and promote collagen synthesis, which is essential for wound contraction and new tissue formation. In an oxygen-deficient environment, the activity of fibroblasts is limited, collagen synthesis is reduced, and wound healing is affected. HBOT can provide enough oxygen to promote the proliferation and function of these repair cells so that new skin tissue can be formed faster.
Many bacteria that cause chronic wound infections, such as Clostridium perfringens, are anaerobic, that is, they cannot survive in an environment with sufficient oxygen. HBOT can increase tissue oxygen concentration and directly inhibit the growth of anaerobic bacteria, thereby reducing the need for antibiotic use and reducing the risk of drug-resistant bacteria.
Hyperbaric oxygen therapy (HBOT) has been widely used in the treatment of various difficult-to-heal wounds, especially for chronic wounds caused by ischemia, infection, inflammation, etc. The following types of patients can usually benefit from HBOT.
Due to peripheral vascular disease and nerve damage, diabetic patients often suffer from chronic ulcers, especially diabetic feet. Poor blood circulation leads to tissue hypoxia, which makes wound healing extremely slow and accompanied by a high risk of infection. HBOT can effectively improve wound oxygen supply, reduce necrotic tissue, improve healing rate, and even reduce the risk of amputation by increasing blood oxygen content and promoting angiogenesis.
Patients who are bedridden or have difficulty moving are prone to pressure sores (bedsores), especially in pressure areas such as the sacrum, heels, and hips. Late-stage pressure sores are usually accompanied by deep tissue necrosis, infection, and even deep ulcers. HBOT can accelerate tissue repair by improving local microcirculation, inhibiting anaerobic infection, and is an important auxiliary means for treating stubborn pressure sores.
Cancer patients who have received radiotherapy may develop radioactive tissue necrosis after several months or years, including radiation dermatitis, osteonecrosis (such as mandibular osteonecrosis), and radiation cystitis. These injuries are often caused by insufficient oxygen supply due to vascular damage, and traditional treatments are limited in effectiveness. HBOT can promote capillary regeneration and improve local oxygen supply, thereby accelerating the repair of damaged tissues.
For large-area burns, severe lacerations, and wounds that are difficult to heal after surgery, HBOT can help reduce edema, improve resistance to infection, enhance tissue repair ability,y and shorten healing time. Especially for patients who have undergone skin transplant or flap surgery, HBOT can improve the survival rate of transplanted tissues and increase the success rate of treatment.
