NCT04518007

Brief Summary

The study evaluates the effect of hyperbaric oxygen therapy on veterans with combat-associated PTSD in an double blind sham control study.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
56

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Feb 2020

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 25, 2020

Completed
16 days until next milestone

First Submitted

Initial submission to the registry

March 12, 2020

Completed
5 months until next milestone

First Posted

Study publicly available on registry

August 19, 2020

Completed
3.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 26, 2024

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

February 26, 2024

Completed
Last Updated

July 3, 2024

Status Verified

July 1, 2024

Enrollment Period

3.9 years

First QC Date

March 12, 2020

Last Update Submit

July 2, 2024

Conditions

Keywords

hyperbaric oxygen therapy

Outcome Measures

Primary Outcomes (1)

  • PTSD symptoms

    PTSD symptoms will be assessed by the PTSD Clinician-Administered PTSD Scale (CAPS) questionnaire.

    Change from Baseline immediately after the intervention

Secondary Outcomes (13)

  • depression

    Change from Baseline immediately after the intervention

  • Changes in growth following a traumatic event

    Change from Baseline immediately after the intervention

  • wellbeing

    Change from Baseline immediately after the intervention

  • emotional regulation

    Change from Baseline immediately after the intervention

  • global distress

    Change from Baseline immediately after the intervention

  • +8 more secondary outcomes

Study Arms (2)

hyperbaric oxygen therapy (HBOT) active treatment

ACTIVE COMPARATOR

The HBOT protocol consists of 60 daily sessions, five times per week, each session lasting 90 minutes, of 100% oxygen at 2 ATA and 5-minute air breaks every 20 minutes.

Device: hyperbaric oxygen therapy

hyperbaric oxygen therapy (HBOT) sham treatment

SHAM COMPARATOR

All the conditions provided in the HBOT intervention will be provided in the sham intervention. However, in contrast to the HBOT, where the pressure will go up to 2 ATA, in the sham condition the pressure will go up to 1.1 ATA during the first five minutes of the session with noise of circulating air, and then decrease slowly during the next half hour to 1.0 ATA and the oxygen level will be 21% The initial 1.1 ATA level will provide a minimal pressure sensation in the ears, with the same nurse advice on pumping the ears. In the last five minutes of the session, the air will be circulated again with its related noises. Sham and HBOT sessions will never be adjacent, so subjects from the two groups cannot meet and discuss the session and its effects.

Device: hyperbaric oxygen therapy

Interventions

The HBOT protocol consists of 60 daily sessions, five times per week, each session lasting 90 minutes. Investigational product: Multiplace hyperbaric oxygen chamber (Haux, Germany) located at the Sago l Center for Hyperbaric Medicine and Research, Shamir (Assaf-Harofeh) Medical Center, Israel.

hyperbaric oxygen therapy (HBOT) active treatmenthyperbaric oxygen therapy (HBOT) sham treatment

Eligibility Criteria

Age25 Years - 60 Years
Sexmale
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Subject willing and able to read, understand and sign an informed consent
  • Age 25-60
  • Five years or more after the last traumatic exposure
  • CAPS-5 score PTSD symptoms questionnaire ≥ 20.
  • Failure to improve after at least one line of conventional therapy, such as prolonged exposure, trauma related psychotherapy, eye movement desensitization therapy (EMDR).

You may not qualify if:

  • Inability to attend scheduled clinic visits and/or comply with the study protocol.
  • History of TBI or any other brain pathology
  • Active malignancy
  • Substance use at baseline, except for prescribed cannabis if vaporized or taken PO as tincture
  • Current manic episode or psychotic disorders
  • Serious suicidal ideation
  • Severe or unstable physical disorders or major cognitive deficits at baseline
  • for any reason prior to study enrollment
  • Chest pathology incompatible with pressure changes (including active asthma)
  • Ear or Sinus pathology incompatible with pressure changes
  • An inability to perform an awake brain MRI
  • active smoking

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Dialysis Clinic in Asaf Harofhe Medical Center

Ẕerifin, 70300, Israel

Location

Related Publications (2)

  • Danan D, Grosskopf Y, Mayo A, Efrati S, Kutz I, Lang E, Alon U, Doenyas-Barak K. Hyperbaric Oxygen Therapy for PTSD: Threshold Effect for Sustained Symptom Improvement in a Biologically Based Treatment. Brain Behav. 2025 Aug;15(8):e70757. doi: 10.1002/brb3.70757.

  • Doenyas-Barak K, Kutz I, Lang E, Assouline A, Hadanny A, Aberg KC, Levi G, Beberashvili I, Mayo A, Efrati S. Hyperbaric Oxygen Therapy for Veterans With Combat-Associated Posttraumatic Stress Disorder: A Randomized, Sham-Controlled Clinical Trial. J Clin Psychiatry. 2024 Nov 10;85(4):24m15464. doi: 10.4088/JCP.24m15464.

MeSH Terms

Conditions

Stress Disorders, Post-Traumatic

Interventions

Hyperbaric Oxygenation

Condition Hierarchy (Ancestors)

Stress Disorders, TraumaticTrauma and Stressor Related DisordersMental Disorders

Intervention Hierarchy (Ancestors)

Oxygen Inhalation TherapyRespiratory TherapyTherapeutics

Study Officials

  • Keren Doenyas

    Asaf-Harofhe MC

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: hyperbaric oxygen therapy (2ATA, 100% oxygen) vs. sham (1.1ATA, 21% oxygen)
Sponsor Type
OTHER GOV
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 12, 2020

First Posted

August 19, 2020

Study Start

February 25, 2020

Primary Completion

January 26, 2024

Study Completion

February 26, 2024

Last Updated

July 3, 2024

Record last verified: 2024-07

Data Sharing

IPD Sharing
Will not share

Locations