Hyperbaric Oxygen Therapy for Wounds, Explained

Of everything in wound medicine, hyperbaric oxygen therapy generates the most curiosity from patients. It sounds like science fiction: breathe pure oxygen in a pressurized chamber and wounds heal better. The reality is more grounded, and as a clinician who specializes in this therapy, I want to explain it properly: what it does, who it helps, and what it cannot do.

The problem it solves

Wounds heal on oxygen. Every stage of repair, fighting bacteria, growing new blood vessels, building collagen, runs on oxygen delivered by blood. Many chronic wounds stall precisely because the surrounding tissue is oxygen-starved: diabetes narrows small vessels, radiation therapy scars tissue, and some infections destroy local blood supply. You can put the world's best dressing on a wound, but if the tissue underneath is suffocating, healing stays stuck.

How the therapy works

In a hyperbaric chamber, you breathe 100 percent oxygen at pressures typically two to three times normal atmospheric pressure. Under that pressure, oxygen does something it normally cannot: it dissolves directly into your blood plasma, not just your red blood cells. Plasma reaches places damaged vessels struggle to serve, so oxygen levels in starved tissue rise dramatically during and after each session.

Repeated over a course of treatment, that oxygen surge does more than feed cells. It stimulates the growth of new blood vessels into the wound area, strengthens white blood cells' ability to kill bacteria, reduces swelling, and boosts collagen production. The goal is not one good oxygen bath; it is convincing the body to rebuild its own supply lines.

Which wounds qualify

Hyperbaric therapy is an adjunct for specific stubborn problems, supported by clinical evidence and recognized by Medicare and most insurers for indications that include:

• Diabetic foot ulcers that have failed to improve with a month of standard care
• Tissue damage from past radiation therapy
• Compromised skin grafts and flaps
• Certain bone infections (osteomyelitis) that resist treatment
• Crush injuries and other acute oxygen-starvation problems

It is not a treatment for every slow wound, and a reputable program will say so. Wounds caused primarily by untreated vein disease or unrelieved pressure need those root causes fixed first.

What treatment is actually like

A session lasts about two hours, lying comfortably in a clear chamber where you can watch television or nap. You feel pressure in your ears as the chamber pressurizes, the same sensation as descending in an airplane, and you learn easy techniques to clear it. A full course typically runs 20 to 40 sessions, five days a week, which is a real commitment, and the patients who complete the course are the ones who benefit.

Side effects are uncommon and usually mild, ear pressure being the most frequent. Your care team screens for the conditions that need precautions before you ever enter a chamber.

The honest bottom line

Hyperbaric oxygen therapy is neither a miracle nor a gimmick. It is a well-studied tool that, for the right wound, supplies the one ingredient no dressing can: oxygen in tissue that has been running on empty. It works best inside a complete wound care plan, debridement, infection control, offloading, circulation management, and that is exactly how we use it. If you have a wound that refuses to heal, an evaluation can determine whether oxygen is the missing piece.

This article is for education only and is not medical advice. For guidance about your own health, talk with your provider or call our clinic.