Hyperbaric Oxygen Therapy for Specific Conditions: What the Evidence Supports

Clinical hyperbaric oxygen therapy is an established treatment for a defined list of conditions, delivered at 2.0–2.4 ATA with 100% oxygen in an accredited facility. Mild hyperbaric chambers like ours operate at 1.1–1.7 atm and are used for wellness and recovery — they are not a substitute for clinical HBOT and are not intended to treat any of those conditions.

Getting this distinction right is the single most important thing on this page. It protects patients, and it protects you if you are buying equipment. Below we set out what clinical HBOT is approved for, at what pressure, and where mild systems legitimately fit.

The approved indications for clinical HBOT

The Undersea and Hyperbaric Medical Society (UHMS) maintains the list of indications accepted for clinical HBOT in the United States, and similar lists exist in Europe and elsewhere. All of them share one thing: they are delivered at 2.0 ATA or above with 100% oxygen, in a rigid chamber, under medical supervision.

Condition	What HBOT is used for
Diabetic foot ulcers (selected cases)	Adjunct to standard wound care where healing has stalled
Decompression sickness	Primary treatment for divers
Arterial gas embolism	Emergency treatment
Carbon monoxide poisoning	Reduces half-life of carboxyhaemoglobin
Cyanide poisoning	Adjunct in specific protocols
Gas gangrene	Adjunct to surgery and antibiotics
Crush injury / acute traumatic ischaemia	Salvage of compromised tissue
Necrotising soft tissue infections	Adjunct in life-threatening infection
Refractory osteomyelitis	Chronic bone infection unresponsive to standard care
Delayed radiation injury	Soft tissue and bone necrosis after radiotherapy
Compromised skin grafts and flaps	Support of graft survival
Sudden sensorineural hearing loss	Where initiated within a defined window

A full protocol typically runs 30–40 daily sessions of 90–120 minutes. That regime depends on reaching pressures that a mild chamber cannot reach.

Why pressure is the deciding factor

The therapy works because pressure forces more oxygen into solution in blood plasma. That relationship is roughly linear with pressure, which means the difference between 1.3 atm and 2.4 ATA is not a marginal difference — it is a different therapy.

	Clinical HBOT	Mild HBOT (mHBOT)
Pressure	2.0–2.4 ATA	1.1–1.7 atm
Breathing gas	100% medical oxygen	Enriched oxygen, typically 80–95%
Setting	Hospital or accredited hyperbaric centre	Wellness centre, spa, sports facility, home
Supervision	Physician-led hyperbaric team	Trained operator; not a medical treatment
Approved indications	The list above	None — wellness use only

A mild chamber simply cannot reproduce the clinical protocol, in the same way that a treadmill is not a cardiac cath lab. Both involve the heart; they are not interchangeable.

Where mild hyperbaric chambers fit

Our chambers are used by people and businesses pursuing general wellness, relaxation and recovery as part of a broader routine. Typical settings include:

• Spas and beauty clinics — offered as a relaxation and skin-wellness service. See chambers for spas and beauty.
• Sports and performance facilities — used as part of athlete recovery routines. See chambers for sports recovery.
• Wellness centres and biohacking studios — general wellbeing sessions.
• Private homes — personal wellness use. See chambers for home use.

Users report that sessions are relaxing and that they value the uninterrupted rest period. What we will not do is tell you that a 1.1–1.7 atm session treats a disease, because the evidence does not support that, and any supplier who tells you otherwise is selling you something.

Safety: who should not use a chamber

Hyperbaric sessions are not suitable for everyone. Commonly cited exclusions include:

• Untreated pneumothorax (collapsed lung) — an absolute contraindication.
• Recent ear surgery or significant sinus/ear congestion, because of pressure equalisation.
• Certain respiratory conditions, including severe COPD with air trapping.
• Pregnancy — generally advised against.
• Recent chemotherapy with specific agents (for example bleomycin or doxorubicin).
• Uncontrolled fever, or an active upper respiratory infection that prevents equalisation.

Anyone with a significant medical condition should clear it with their physician first. Our HBOT explainer covers the underlying physics in more detail.

Questions to ask any chamber supplier

1. At what pressure does the chamber operate, and is that the actual delivered pressure or a marketing figure?
2. What oxygen concentration is delivered at the mask or headset, and is it integrated or an add-on?
3. Is the shell rigid or fabric, and what is the wall construction?
4. What certification does the unit carry, and can you see the declaration of conformity?
5. Will they put efficacy claims in writing — and if so, will those claims survive scrutiny?

A supplier who answers these precisely is one you can work with.

Medical disclaimer: the information on this page is provided for general education only and is not medical advice. Hyperbaric oxygen therapy should only be undertaken under the supervision of a qualified healthcare professional. HyperbaricO2Care chambers are mild hyperbaric systems operating at 1.1–1.7 atm and are not intended to diagnose, treat, cure or prevent any disease. Always consult your physician before beginning any oxygen therapy programme.