Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Hyperbaric Oxygen Therapy for Pain from Endometriosis

Official title: The HEROES Trial: Hyperbaric Oxygen Therapy for Endometriosis-Related Pain: A Prospective Randomized Study

Run by Sunnybrook Health Sciences Centre · NCT06579040 · Data updated 2026-11-12

This study is testing if Hyperbaric Oxygen Therapy can help women with endometriosis who have been in pain for a long time feel better while they wait for surgery.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment64 (estimated)
SponsorSunnybrook Health Sciences Centre
Academic / other
Locations1 site (Toronto, Ontario)
StatusRecruiting
StartedApril 8, 2025
Main results expectedDecember 2027
Study endsDecember 2027
Registry record updatedApril 15, 2026
Trial IDNCT06579040 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are women aged 18 and older with refractory pelvic pain due to endometriosis for more than six months.

Probably not a fit

Patients with chronic pain from conditions unrelated to endometriosis or those medically unfit for hyperbaric treatments may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This trial investigates the use of Hyperbaric Oxygen Therapy (HBOT) to alleviate pelvic pain associated with endometriosis, a condition affecting approximately 10% of women. The study aims to provide an alternative treatment option for patients who have been suffering from refractory pain for over six months and are on a waitlist for surgical intervention. By utilizing a monoplace hyperbaric chamber, the therapy seeks to reduce inflammation and promote healing in affected tissues. The trial will assess the effectiveness of HBOT in improving pain levels and overall quality of life for participants.

Why it matters

Potential benefit: If successful, this therapy could provide significant pain relief and improve the quality of life for women suffering from endometriosis-related pain.

How similar studies have gone: While the use of HBOT for endometriosis is a novel approach, preliminary research suggests potential benefits in reducing inflammation, though further studies are needed to confirm efficacy.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 18 years old
* Patients having refractory pelvic pain (NRS≥4) secondary to endometriosis for \>6 months
* May or may not be on traditional multi-modal treatment (pharmacological and/or non-pharmacological)
* On waitlist for surgical treatment

Exclusion Criteria:

* Patients with chronic pain resulting from disease processes unrelated to the pathophysiology of endometriosis-related symptoms (e.g. irritable bowel syndrome, migraine headache, fibromyalgia, chronic low back pain, and musculoskeletal injuries)
* Contraindications/medically unfit to receive hyperbaric treatments at an outpatient facility (e.g. pneumothorax, in-patients, requiring infusions to maintain hemodynamics, active and unstable coronary disease)
* Unlikely to comply with follow-up assessments (e.g. no fixed address, plans to move out of town)

Where it's running

  • Sunnybrook Health Sciences Centre
    Toronto, Ontario, Canada
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.