1,309 Patients, One Clear Lesson: New Study Says Start HBOT Early and Finish the Course

1,309 patients. Four hyperbaric centers. One very practical question: when, and how many sessions? A new multicenter study from Shanghai, published online October 1, 2026 in Otolaryngology–Head and Neck Surgery, set out to fine-tune how hyperbaric oxygen is used alongside standard care for sudden sensorineural hearing loss. It is a big, real-world dataset, and the answer it lands on is one we love because it is so refreshingly simple: start early, stay consistent, finish the course.

What the researchers looked at

The team reviewed records from four tertiary hospitals in Shanghai with hyperbaric facilities, covering patients seen between January 2022 and September 2024. Everyone met the 2019 AAO-HNS clinical guideline criteria for sudden sensorineural hearing loss. Of the 1,309 patients, 991 received hyperbaric oxygen at 2.2 ATA combined with corticosteroids, and 318 received corticosteroids alone. The researchers then compared hearing recovery at the end of treatment and again at a 90-day follow-up. Read the study abstract on PubMed.

This is a hospital study of an established clinical indication, run by physicians in medical facilities. It is not a wellness trial, and we are not going to pretend it is. We are sharing it because the lessons about timing and consistency are worth hearing for anyone who cares about doing hyperbaric sessions right.

The sweet spot: 11 to 20 sessions

The headline finding is about dose. Patients who completed 11 to 20 hyperbaric sessions were more likely to show slight and partial hearing recovery by the end of treatment than the comparison group. And at the 90-day check-in, that same 11-to-20 session range was associated with better odds of complete recovery. In other words, the benefit showed up most clearly in people who stuck with a full course, and it kept showing up after the sessions ended.

The authors summed it up plainly: hyperbaric oxygen combined with corticosteroids improves hearing recovery in this condition, and they recommend starting 10 to 20 sessions early, preferably within two weeks of onset, especially for the more severe cases. They also note that age, delayed treatment, vertigo, and how much hearing was lost at the start all influenced results, and they call for more standardized ways of measuring recovery in future studies. Honest limits, clearly stated. That is our kind of paper.

One more line from the abstract that makes every chamber technician nod along: no serious adverse events occurred.

Why timing and consistency are an equipment story too

Read between the lines and this study is really about showing up. Early starts and full courses only happen when the chamber is ready every single day. A session that gets canceled because a filter was not on hand, a fitting is leaking, or nobody knows how to troubleshoot a pressure reading is a session that breaks the rhythm.

That is the part of hyperbaric care we obsess over in our Holiday, Florida workshop. Our engineers design our own improvements, we keep parts on hand so routine care never becomes a waiting game, and we train every owner on startup, pressurization, ear-equalization coaching, daily checks, and oxygen safety basics. Reliability, safety, and function are not slogans for us; they are what make a consistent schedule possible.

For wellness centers building a more structured program, our NFPA 99 Compliance Kit helps teams organize the documentation, logs, and procedures that keep a busy schedule running smoothly from the first session of the day to the last.

Prestige’s take: keep it in the right lane

Prestige chambers are wellness equipment, and we keep our claims in that lane. Sudden hearing loss is a medical emergency that belongs with a physician, fast, and the treatment in this study was prescribed and delivered in hospital settings. If you or someone you love notices a sudden change in hearing, call a doctor right away. What we take from this research is the bigger, universal lesson: great hyperbaric programs are built on consistency. Clear protocols, a reliable chamber, trained operators, and a team that knows every part by name.

Buy from Prestige, get supported by Prestige forever—the same team who built it and installed it stays in your corner long after delivery day.

Bottom line: a 1,309-patient study just put numbers behind something good operators already feel in their bones. Start on time, stay on schedule, finish what you started. Educational commentary only; this article is not medical advice.

Source

Sun Y., Yang Y., Wang Z., Zhao H., Ge X., Pan S., “Optimizing Hyperbaric Oxygen Therapy for Sudden Hearing Loss,” Otolaryngology–Head and Neck Surgery, published online October 1, 2026. doi:10.1002/ohn.70449. https://pubmed.ncbi.nlm.nih.gov/42820475/.

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