Overview
HBOT for severe thermal burns is a UHMS-approved indication. Treatment aims to reduce burn progression, limit tissue loss in the "zone of stasis," decrease infection, and improve skin graft survival. Must be initiated within 24 hours of injury for maximum benefit.
Severe thermal burns involve three concentric zones: the central zone of coagulation (irreversibly destroyed tissue), the surrounding zone of stasis (reversibly injured tissue at risk of progressing to necrosis), and the outer zone of hyperaemia (viable inflamed tissue). The zone of stasis is the critical target for burn-care interventions — it can be rescued or lost depending on early management.
HBOT addresses the zone of stasis directly. Elevated plasma oxygen reaches tissue with compromised microcirculation; vasoconstriction reduces oedema; angiogenesis supports healing; and enhanced neutrophil-mediated antimicrobial activity reduces burn wound infection — the leading cause of mortality in severe burns.
Early initiation is critical. The Cianci et al. 1988 study and subsequent work support HBOT within 24 hours of burn injury. Delayed initiation significantly reduces benefit.
How HBOT Works for This Condition
HBOT in burns reduces oedema via mild vasoconstriction, enhances tissue oxygenation of the zone of stasis, promotes angiogenesis for repair, improves neutrophil-mediated bacterial killing, and supports skin graft take. Reduction in fluid resuscitation requirements has been documented in some studies.
GRADE Evidence Rating
Cochrane 2004 found insufficient high-quality RCT evidence. UHMS approval rests on burn-centre observational experience.
| GRADE Domain | Assessment |
|---|---|
| Risk of bias | Moderate |
| Consistency | Variable |
| Directness | Direct |
| Precision | Imprecise |
GRADE methodology: Grading of Recommendations Assessment, Development and Evaluation. See GRADE Working Group.
Clinical Protocol
| Typical protocol | 20–40 sessions at 2.0–2.4 ATA; early initiation critical |
|---|---|
| Evidence level | Moderate — UHMS approved |
| FDA status | FDA-approved indication |
Standard burn HBOT: 2.0–2.4 ATA sessions started within 24 hours of injury. Initial frequency may be twice daily for the first 48 hours, then daily. Total course 20–40 sessions depending on burn severity and surgical course. Coordinated with burn surgery team.
Evidence Base
Burn HBOT is UHMS Tier 1 with moderate evidence. Clinical use is longstanding at specialised burn centres. Cochrane reviews have been mixed given the difficulty of randomised controlled trials in acute severe burn populations.
Cautions & Considerations
- Early initiation (within 24 hours) critical for maximum benefit.
- Requires coordination with burn surgery team.
- Burn patients often require ventilator support — multiplace chamber capability needed.
- Standard HBOT contraindications apply.
Key Research & References
- Cianci et al. 1988
- UHMS Indications Manual
- Various burn-centre case series
Indexed Studies for This Condition
Linked entries in the HBOT Studies Database.
Frequently Asked Questions
How soon after a burn should HBOT start?
Within 24 hours ideally. Benefit diminishes significantly with delay.
Does HBOT work for all burns?
HBOT is used for severe burns (second-degree with substantial TBSA, deep partial-thickness, or full-thickness with surgical implications). Minor burns do not require HBOT.
Is burn HBOT only at burn centres?
Severe burn HBOT typically requires multiplace-capable facilities with critical-care support. Most dedicated burn units coordinate with regional hyperbaric centres when HBOT is indicated.
Research disclaimer: This article summarises published research for educational purposes only. Nothing here is medical advice. HBOT is a prescription medical treatment that must be administered under physician supervision in appropriately certified chambers. Discuss any treatment decisions with a qualified clinician.