How Many HBOT Sessions Will I Need?

Why there's no single number

Hyperbaric oxygen therapy is dosed in a course of sessions, and how many you need depends on what's being treated and how your tissue responds. A condition driven by an acute oxygen shortage may turn around quickly, while a chronic wound in poorly perfused tissue takes a sustained course to rebuild blood supply and close. Your physician sets a target range up front and then adjusts based on measured progress.

Typical ranges by condition

These are general ranges, not promises — your plan is individualized:

• Sudden sensorineural hearing loss: roughly 10–20 sessions, started as early as possible
• Non-healing and diabetic wounds: roughly 20–40 sessions
• Radiation tissue injury: roughly 30–40 sessions, sometimes up to 60 for severe osteoradionecrosis
• Refractory osteomyelitis: roughly 20–40 sessions alongside surgery and antibiotics
• Off-label uses (e.g. post-COVID): often around 40 sessions, with honest expectations

What a typical schedule looks like

Most courses are scheduled five days a week, with each visit lasting about two hours door-to-door (around 90 minutes at treatment pressure). The daily rhythm matters — consistent, closely spaced sessions are part of how HBOT builds and sustains its effect, which is also why a center close to home or transit makes a real difference over a multi-week course.

How your physician decides — and adjusts

Before starting, your physician estimates a course length based on your diagnosis and overall picture. Partway through, they reassess — measuring wound closure, hearing, or other markers — to confirm you're responding and to decide whether to continue, extend, or stop. HBOT is one part of a complete plan, so the number of sessions is always weighed against the rest of your care.