Hyperbaric Oxygen Therapy (HBOT) involves breathing oxygen in a pressurized chamber. It is an insurance reimbursable treatment and FDA approved for: 

• Decompression illness 
• Air or gas embolism 
• Anemia due to severe blood loss
• Sinus infections 
• Carbon monoxide poisoning 
• Burns resulting from heat or fire
• Skin grafts
• Necrotizing soft tissue infections
• Osteomyelitis 
• Arterial insufficiency, or low blood flow in the arteries
• Acute traumatic ischemia, which may involve a crush injury
• Gas gangrene 
• A radiation injury, for example, as a result of cancer treatment

Evidence has shown that these uses are safe and effective.