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How Long Should You Stay in a Hyperbaric Chamber?

- by Lisa St. John, M.S.

Lisa St. John, M.S.

Lisa is our Clinic Director and Founder. She earned her Master's degree from Harvard University, completed a Fellowship at Stanford University, and has spent the last 30 years working in the healthcare field.

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Understanding Hyperbaric Oxygen Therapy (HBOT)

Hyperbaric oxygen therapy involves breathing 100% oxygen in a chamber pressurized to higher-than-normal levels (often 2.0 to 2.4 ATA). This allows the body to dissolve far more oxygen into the blood plasma than normal breathing allows — research shows increases of roughly 14 to 20 times typical levels. That extra oxygen reaches tissues that need it, speeding healing and reducing inflammation.

HBOT is used to treat a range of conditions, including chronic wounds, radiation damage, sudden hearing loss, and traumatic brain injuries, and can support recovery from strokes and other conditions where increased oxygen delivery promotes healing.

How Long Does a Session Last?

Session length is measured in "bottom time" — the time spent at full pressure receiving 100% oxygen. This typically ranges from 60 to 120 minutes:

  • 90 minutes — the most common session length

  • 60 minutes — often used for concussion treatment

  • Longer sessions — may be used for severe or chronic infections

  • Shorter sessions — may be sufficient for less severe conditions

Your prescribing physician determines the ideal session length based on your specific condition and how you respond to treatment.

How Many Sessions Will You Need?

The total number of sessions varies significantly by condition:

  • 20 to 40 sessions — typical for a full treatment course, usually administered five days a week

  • 3 to 5 sessions — common for plastic surgery recovery or minor sports injuries

  • More sessions — often needed for chronic conditions or severe injuries

  • Fewer sessions — may be sufficient for general wellness use or minor injuries

Your treatment plan will be customized based on your condition and how well you respond to therapy.

Is HBOT Safe?

HBOT is generally considered safe when properly administered. Most side effects are mild, such as ear discomfort or temporary vision changes, though more serious risks like oxygen toxicity can occur without careful monitoring. At Bay Area Hyperbarics, Certified Hyperbaric Technicians who are also Emergency Medical Technicians monitor every patient throughout treatment to ensure safety, comfort, and effectiveness.

Not everyone is a candidate for HBOT. Certain conditions — including uncontrolled high or low blood pressure and compromised lung function — may require you to avoid this therapy. Our medical director reviews each patient's medical history to confirm HBOT is appropriate before treatment begins.

Frequently Asked Questions

How long is a typical HBOT session? Most sessions last 90 minutes of "bottom time" at full pressure, though sessions can range from 60 to 120 minutes depending on the condition being treated.

How many total HBOT sessions will I need? Treatment courses typically range from 3–5 sessions for minor injuries to 20–40 sessions for chronic conditions, administered daily, five days a week.

Is hyperbaric oxygen therapy safe? Yes, when properly monitored. Side effects are usually mild (ear discomfort, temporary vision changes), and our certified technicians monitor every session to minimize risk.

Who shouldn't get HBOT? Patients with uncontrolled blood pressure or certain lung conditions may not be candidates. Your medical history will be reviewed before starting treatment.

Seeking HBOT Treatment in San Jose, CA

Hyperbaric oxygen therapy can offer significant benefits for a range of medical conditions, with session duration and frequency tailored to your specific needs. Whether you're seeking treatment for chronic wounds, injury recovery, sudden hearing loss, radiation injury, or general wellness, working closely with a physician ensures you receive the right treatment plan for your health goals.

Learn more about what HBOT is and how it works, or contact us to schedule your consultation.

Call Us: 408-356-7438




How Long Should You Stay in a Hyperbaric Oxygen Chamber?

Learn how long to stay in a hyperbaric oxygen chamber, factors affecting session length, and important safety considerations for effective healing.

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