Hyperbaric oxygen therapy, also known as HBOT, is a wellness therapy in which a person breathes pure oxygen in a pressurized chamber. This therapy is typically administered in a hyperbaric chamber, which can be a monoplace chamber designed for a single person or a multiplace chamber that can accommodate multiple individuals. The chamber is pressurized to levels higher than atmospheric pressure, usually around 2 to 3 times normal atmospheric pressure. The primary mechanism of action of HBOT is to increase the amount of oxygen dissolved in the bloodstream, which can promote various therapeutic effects.
Sessions usually last between 30 minutes and 2 hours, and frequency can vary depending on the specific concern being treated and the recommendations of the recipient’s wellness advisor(s). In many cases, a standard course of hyperbaric oxygen treatment involves daily sessions, typically five days a week. The suggested total number of sessions can range from just a few to several weeks’ worth, depending on the nature and severity of the issue the recipient seeks to address.
Wound Healing
Hyperbaric oxygen therapy can promote the healing of certain wounds, such as diabetic foot ulcers, non-healing surgical wounds, wounds resulting from traumatic injuries, and burns. In conditions like trauma-induced crush injuries, this works by increasing the amount of dissolved oxygen in the bloodstream through higher pressure. It also reduces bubble size and promotes various healing processes, including vasoconstriction to manage tissue swelling, collagen synthesis for wound healing, and angiogenesis for new blood vessel formation. Simultaneously, HBOT enhances the body’s defense against bacteria by increasing oxygen free radicals and improving the effectiveness of certain antibiotics.1 Wound healing is common reason people receive HBOT in wellness studio settings such as ReEnergized, and is also widely recognized and implicated in emergency medical settings. More on this here.
Fighting Infections
Hyperbaric oxygen therapy can also help fight bacterial and fungal infections, including more severe and treatment-resistant infections such as those resulting from diabetic wounds, surgical complications, and radiation-related complications. HBOT is particularly valuable when faced with any of the growing list of antibiotic-resistant pathogens, for those allergic or intolerant of antibiotics, and for anyone avoiding the overuse of antibiotics as a means of optimizing their natural immunity. Specifically, HBOT fights infection by slowing down or killing bacteria and boosting the immune system’s natural ability to fight infections. Additionally, it works well alongside other infection-fighting treatments as a complimentary approach.2
Radiation Injury
Cancer patients often undergo hyperbaric oxygen therapy to reduce the side effects of radiation treatment on healthy tissues. These include thermal burns and the potentially-fatal sepsis infection than can result from them. HBOT has an extensive history of success in treating burns– in fact, scientists have known of its ability to reduce burn healing times and mortality rates for over half a century.3 While HBOT is known to treat infections like sepsis by fighting bacteria and boosting immunity, it treats burns by increasing the O2 levels in burned tissues.3
Treating Herpes Family Viruses
Common viruses in the herpes family include herpes varicella-zoster (chickenpox), herpes zoster (shingles), herpes simplex types I and II, and herpes meningitis. Like many viruses, they are anaerobic, meaning they thrive in environments without oxygen. By increasing bodily oxygen content and circulation, hyperbaric oxygen therapy has been shown to drastically accelerate herpes blister and lesion healing, relieve associated pain, and reduce the prevalence of certain symptoms associated with some herpes strains, such as neuralgia and depression.4
Treating Traumatic Brain Injury
Hyperbaric oxygen therapy has been demonstrated in numerous studies to have neuroprotective properties when administered to sufferers of traumatic brain injuries (TBI). It does this by improving preventing cell death, reducing inflammation, improving tissue oxygenation and cellular metabolism, and promoting the formation of new neurons and blood vessels in the brain.5
Treatment of Decompression Sickness and Carbon Monoxide Poisoning
One traditional application of hyperbaric oxygen therapy is to treat decompression sickness, also known as nitrogen gas embolism or ‘the bends.’ Decompression sickness is most commonly caused by ascending too rapidly after scuba diving, which leads to nitrogen gas bubble to formation within the affected person’s blood vessels. Left untreated, decompression sickness can lead to severe side effects such as tissue damage, stroke, or heart attack, and can even be fatal.6 The pressurized environment in the hyperbaric chamber allows the increased atmospheric pressure to force more oxygen into the bloodstream, which helps to shrink, dissolve and eliminate the gas bubbles there. Simultaneously, the increased oxygen availability helps to support tissues that may be experiencing oxygen deprivation due to the blockage caused by gas embolisms. These are the same mechanisms by which HBOT speeds the removal of the noxious gas carbon monoxide from the bloodstream.
Treatment of Vascular Air Embolism
In contrast to decompression sickness, vascular air embolism (or VAE) occurs when the bubbles formed in the affected person’s arteries are made up of air, as opposed to nitrogen. This usually occurs as a side effect of some routine medical procedures, such as the administration of fluids intravenously.7 The mechanisms by which HBOT treats gas embolisms and vascular air embolisms are generally similar. Both conditions involve the presence of gas bubbles in the bloodstream, which can obstruct blood vessels and lead to tissue damage. For both types of embolisms as well as carbon monoxide poisoning, HBOT should be administered in a timely manner for the best chance at preventing severe consequences, and treatment should not be completed before first receiving professional guidance from the recipient’s emergency healthcare team.6, 7
If you’re interested in hyperbaric oxygen therapy, you’re probably wondering how someone receives this treatment. HBOT is usually administered in one of three different types of settings:
The risks associated with hyperbaric oxygen therapy are generally considered to be rare when the treatment is administered appropriately by qualified, informed professionals. These include potential claustrophobia while laying in the hyperbaric oxygen therapy chamber, anxiety, lightheadedness, fatigue, ear or sinus pressure or discomfort, and in cases where the recipient was in the chamber for too long, there have been cases of oxygen poisoning. HBOT is not recommended for pregnant women or individuals with middle ear barotrauma, uncontrolled high blood pressure, or acute or chronic respiratory conditions.