- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01986205
Hyperbaric Oxygen for Traumatic and Non-traumatic Brain Injury (HYBOBI2)
A Double-blind Randomized Trial of Hyperbaric Oxygen Versus Sham for Persistent Symptoms After Brain Injury
The purpose of this study is to examine whether 40 hyperbaric oxygen sessions has effect on long-term symptoms after brain injury. This study will enroll 90 individuals with persistent problems 6 months to 10 years after a brain injury. These individuals will be randomized to receive either oxygen or air in a pressurized hyperbaric chamber. Participants will receive 40 daily hyperbaric chamber sessions.
Participants will have a series of tests and questionnaires before they begin their chamber sessions, after they complete 40 sessions, and 6 months after they joined the study. These tests include computer-based and pencil-and-paper questionnaires and thinking tests, brain imaging, a neurological examination, and an eye exam. Participants will also be asked to provide blood for future research.
After the 6-month tests are complete, all participants will receive 40 hyperbaric oxygen sessions, then undergo the same tests at 9 months and 12 months.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This is a single center, randomized, double-blind study with a subsequent open-label intervention period to explore whether a course of hyperbaric oxygen can ameliorate persistent symptoms after brain injury. In this study, adult men and women with persistent symptoms 6 months to 10 years after injury will be randomized to receive 40 hyperbaric oxygen sessions (100% oxygen at 1.5 atmospheres absolute, 60 minutes door-to-door) or sham chamber sessions (room air chamber excursion at near-ambient pressure, 60 minutes door-to-door). Chamber sessions will be provided Monday through Friday, excluding holidays, and participants will have up to 12 weeks to complete their 40 sessions.
Participants will be evaluated before the chamber sessions, at 13 weeks, and at 6 months. Assessments include self-administered questionnaires, neuropsychological function, a brief neurological examination, electroencephalography, visual function tests, and a neuro-optometry evaluation. These outcome tools will measure symptoms and deficit at the time of enrollment and subsequent evaluations, and provide insight into whether hyperbaric oxygen can play a role in recovery from brain injury.
Once the participants have completed their 6 month evaluations, they will enter an open intervention group, receiving 40 hyperbaric sessions at 1.5 atmospheres absolute for 60 minutes. Participants will have up to 12 weeks to complete these sessions. Participants will be evaluated after the second set of chamber sessions (at 9 months and again at 12 months). Individuals will then be assessed annually until study closure (12-month follow-up of the last enrolled participant).
Participants will be asked to provide blood for long-term storage of serum, plasma, and DNA for future investigations, including apolipoprotein E genotype.
Study Type
Enrollment (Actual)
Phase
- Phase 2
Contacts and Locations
Study Locations
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Utah
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Murray, Utah, United States, 84157
- Intermountain Medical Center
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Salt Lake City, Utah, United States, 84143
- Intermountain LDS Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Adults, age 18-70 years, both men and women
- Able to speak and read English as primary language
- Able and willing to provide written informed consent for study participation.
- Able and willing to complete outcome assessments and provide blood and urine samples as required by the study protocol.
- Able to tolerate the chamber environment and hood placement and to equalize middle ear pressure.
Past history of at least one brain injury with persistent symptoms that meets all of the following criteria:
- Brain injury of non-stroke etiology that occurred at least 6 months but no more than 10 years prior to enrollment.
- At least 3 of the following persistent symptoms from the injury: headaches, dizziness or balance problems, blurred vision, tiredness/fatigue or sleep problems, seizures, remembering things or solving problems, managing stress or emotional upsets, controlling temper/irritability, depression, anxiety, post-traumatic stress, or ringing in the ears.
- Normal thyroid stimulating hormone and hematocrit value greater than 35% within the previous 6 months.
Exclusion Criteria:
Contraindications to hyperbaric oxygen
- Insulin-dependent diabetes mellitus, or diabetes mellitus that is not reasonably controlled.
- Uncontrolled seizure disorder (participants must be on therapy and seizure-free for at least 6 months).
- Claustrophobia precluding chamber or hood tolerance.
- Implanted devices not cleared for hyperbaric pressurization.
- Pregnancy or plans to become pregnant during the study participation period. Women of childbearing potential will be asked to use an acceptable form of birth control during study participation.
- Lung disease, such as emphysema, chronic bronchitis, asthma that is not well-controlled, or bullous lung disease that raises the risk for pulmonary barotrauma due to air trapping.
- Active malignancy, previous malignancy (except basal cell carcinoma) in the last 5 years, or any prior treatment with bleomycin (Blenoxane). Prior treatment with doxorubicin (Adriamycin) is acceptable as long follow-up echocardiography is normal.
- Chronic disease such as heart or renal failure would raise the participant's risk of adverse events during hyperbaric oxygen.
Confounds to the outcome assessments
- Inability to speak English as their primary language (English fluency required because many of the outcomes are only in available in English)
- Instability with walking requiring more than a cane for assistance
- Alcohol abuse, by self-report, within the last year.
- Lifetime history of illicit drug use, by self-report, except remote (greater than one year), non-habitual use of marijuana.
- Failed urine drug screen during study participation.
- Continued participation during the intervention period in sports activities where head injury is likely, such as contact football, boxing, mixed martial arts, etc.
- Blind or deaf.
- Major psychiatric disorder or degenerative mental disease (such as multiple sclerosis).
- Prior therapeutic radiation to the central nervous system.
- Personal history of any condition that pre-dates their brain injury that resulted in diminished capacity (such as chromosomal disorders) or that, in the opinion of the investigators, affects cognition to such a degree that the outcome assessments are invalidated (such as learning disability or attention deficit hyperactivity disorder requiring pharmaceutical therapy as an adult).
- Any brain injury from stroke (ischemic or hemorrhagic)
- Known untreated chronic or acute medical conditions, such as hypothyroidism, Cushing's disease, untreated hypertension, etc., that would confound the outcome assessments or inhibit compliance with the study protocol. If treated, these disorders would not be excluded.
- Concomitant enrollment in any other drug/device clinical trial.
- Prior hyperbaric oxygen for any reason within the last year.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Hyperbaric Oxygen
100% oxygen at 1.5 atmospheres absolute for 60 minutes, 40 sessions
|
Hyperbaric oxygen (USP oxygen >99%) delivered in a hyperbaric chamber pressurized to 1.5 atmospheres absolute.
Other Names:
|
Placebo Comparator: Minimal pressure air
Regular air at minimal pressurization for 60 minutes, 40 sessions
|
Room air delivered in a hyperbaric chamber with minimal pressurization.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Neurobehavioral Symptom Inventory
Time Frame: 13 weeks
|
Participant-reported symptom rating of post-concussive symptoms
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13 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Neurobehavioral Symptom Inventory
Time Frame: 6 months
|
Participant-reported symptom rating of post-concussive symptoms
|
6 months
|
Incidence of myopia
Time Frame: 13 weeks
|
Myopic visual changes after chamber sessions
|
13 weeks
|
Collaborators and Investigators
Sponsor
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1024845
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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