Clinical trial Recruiting at 2 sites Phase 4 Interventional Ages 18 and up

Adding hyperbaric oxygen therapy to standard care for necrotizing soft-tissue infection

Official title: Adjunctive Hyperbaric Oxygen Treatment for Patients With Necrotizing Soft-Tissue Infection (HOT-NSTI Trial)

Run by Copenhagen University Hospital, Rigshospitalet · NCT07489274 · Data updated 2026-11-12

This trial will test if giving hyperbaric oxygen therapy in addition to surgery, antibiotics, and intensive care helps adults with confirmed necrotizing soft-tissue infection survive the first 30 days.

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment1480 (estimated)
SponsorCopenhagen University Hospital, Rigshospitalet
Academic / other
Locations2 sites (Antwerp, Edegem and 1 other locations)
StatusRecruiting
StartedApril 4, 2026
Main results expectedApril 30, 2033
Study endsJune 30, 2033
Registry record updatedSeptember 4, 2026
Trial IDNCT07489274 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18 or older with surgically confirmed necrotizing soft-tissue infection who can receive hyperbaric oxygen and who are not pregnant, not referred to palliative care, and provide consent are ideal candidates.

Probably not a fit

Patients with contraindications to hyperbaric oxygen (for example an undrained pneumothorax), confirmed pregnancy, those already in palliative care, or those who decline participation are unlikely to benefit from this trial.

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

What this trial studies

Necrotizing soft-tissue infection is a rare, rapidly progressing bacterial infection with high short-term mortality despite prompt surgery, antibiotics, and intensive care. HOT-NSTI compares adjunctive hyperbaric oxygen treatment plus the investigator's choice of standard care versus standard care alone in adults with surgically confirmed NSTI. The trial's primary outcome is 30-day all-cause mortality, with patients enrolled at specialist centers that provide hyperbaric oxygen facilities. The sponsor and collaborators include academic and regional hospitals in Belgium and Denmark and the lead site is University Hospital Antwerpen.

Why it matters

Potential benefit: If successful, adding hyperbaric oxygen could reduce early deaths and improve recovery for patients with necrotizing soft-tissue infection.

How similar studies have gone: Observational and non-randomized reports have suggested potential benefit from hyperbaric oxygen in NSTI, but randomized trial evidence has been lacking until now.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults (age ≥18 years)
* Surgical confirmed NSTI (defined by perioperative tissue characteristics observed by the surgeon. The diagnosis is based on sign as necrotic or deliquescent soft tissue with widespread undermining of the surrounding tissue)

Exclusion Criteria:

* Contraindications for HBO2 treatment according to local protocol (e.g., undrained pneumothorax)
* Confirmed pregnancy
* Referred to palliative care
* Previously randomized into the HOT-NSTI trial
* Known objection by the patient to participate in the trial
* Allergy against study drug

Where it's running

  • University Hospital Antwerpen
    Antwerp, Edegem, Belgium
    Recruiting
  • Haukeland University Hospital
    Bergen, Norway
    Recruiting

Similar studies

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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.