NCT02089594

Brief Summary

Objective/Hypothesis: An eight-week course of forty low-pressure Hyperbaric Oxygen Treatment's (HBOT's) can significantly improve symptoms and cognitive function in subjects with the persistent-post concussion syndrome (PPCS) of mild traumatic brain injury (mTBI).

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
59

participants targeted

Target at below P25 for phase_3

Timeline
Completed

Started May 2014

Longer than P75 for phase_3

Geographic Reach
1 country

1 active site

Status
unknown

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

First Submitted

Initial submission to the registry

March 14, 2014

Completed
4 days until next milestone

First Posted

Study publicly available on registry

March 18, 2014

Completed
1 month until next milestone

Study Start

First participant enrolled

May 1, 2014

Completed
3.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 1, 2018

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2019

Completed
Last Updated

April 18, 2017

Status Verified

April 1, 2017

Enrollment Period

3.8 years

First QC Date

March 14, 2014

Last Update Submit

April 16, 2017

Conditions

Keywords

Hyperbaric Oxygen TreatmentMild Traumatic Brain InjuryPersistent Post-Concussion Syndrome

Outcome Measures

Primary Outcomes (2)

  • Working Memory

    One week after final HBOT

  • Neurobehavioral Symptom Inventory (NSI)

    One week after final HBOT

Secondary Outcomes (10)

  • Wechsler Abbreviated Scale of Intelligence II (WASI-II)

    2 months after final HBOT

  • Wechsler Memory Scale-IV (WMS-IV

    2 months after final HBOT

  • Rey Auditory Verbal Learning Test (RAVLT)

    2 months after final HBOT

  • Benton Visual Retention Test with Alternate Forms (Benton VRT)

    2 months after final HBOT

  • Stroop Color-Word Interference Test

    2 months after final HBOT

  • +5 more secondary outcomes

Study Arms (2)

Hyperbaric Oxygen Therapy (HBOT)

EXPERIMENTAL

Hyperbaric Oxygen Therapy at 1.5 ATA (atmospheres absolute). The subjects will receive 40 low pressure HBOT's on a once/day, 5d/week eight week schedule.

Drug: Hyperbaric Oxygen

No Hyperbaric Oxygen Treatment (HBOT)

EXPERIMENTAL

Subjects will receive eight weeks of no hyperbaric treatment while they continue any pre-study maintenance medication and/or pre-study counseling. Subjects will be retested and the control group will be crossed over to receive the identical 40 HBOTs of the HBOT group.

Drug: Hyperbaric OxygenDrug: No Hyperbaric Oxygen

Interventions

HBOT Group: Pressurization will proceed with 100% oxygen at 1.0 pounds per square inch (psi) per minute, the minimal pressurization rate, to 1.5 ATA (atmospheres absolute) or 7.35 psi and will take approximately 7 minutes. Pressurization will then resume until the final depth of 1.5 ATA is achieved. The patient will remain at depth for approximately 45 minutes and the subject will be informed of the onset of depressurization, which will occur at the same rate as pressurization. Total dive time will be 60 minutes.

Also known as: Hyperbaric Oxygen Therapy
Hyperbaric Oxygen Therapy (HBOT)No Hyperbaric Oxygen Treatment (HBOT)

Subjects will receive their usual care during the equivalent eight-week HBOT treatment period. There will be no hyperbaric chamber experience. At the conclusion of the eight-week control period both control and experimental subjects will be retested and the control group will be crossed over to receive the identical 40 HBOTs of the HBOT group.

Also known as: Hyperbaric Oxygen Therapy
No Hyperbaric Oxygen Treatment (HBOT)

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Adults, 18-65 years old.
  • One or more mild TBI's due to blunt or blast injury.
  • Meets criteria for PPCS.
  • Ability to complete the NSI.
  • Ability to complete the PCL-M or C.
  • Ability to complete CAPS if needed.
  • Absence of acute cardiac arrest or hemorrhagic shock at time of TBI that would cause a global ischemic insult to the TBI.
  • Ability to complete the Michigan Alcohol Screening Test( MAST) and Drug Abuse Screening Test (DAST).
  • Ability to complete a urine toxicology screen for drugs of abuse.
  • Negative pregnancy test in females. Female subjects will need to have a negative urinalysis result in order to start or continue treatment.
  • Subjects must be legally responsible, speak and understand English fluently, and be able to sign their own consent documents.
  • Otherwise good health.

You may not qualify if:

  • Pulmonary disease that precludes HBOT (e.g., bronchospasm unresponsive to medication, bullous emphysema).
  • Unstable medical conditions that are contraindicated in HBOT (e.g. severe congestive heart failure or heart failure requiring hospital emergency evaluation or admission in the previous year).
  • Severe confinement anxiety (e.g., patients who require anesthesia conscious sedation for MRI).
  • Other pre-TBI cerebral neurological diagnoses including stroke, dementia, degenerative diseases, multiple sclerosis, congenital neurological disorder.
  • Participation in another experimental trial with active intervention.
  • High probability of inability to complete the experimental protocol (e.g. terminal condition or inability to complete outcome instruments).
  • Previous HBOT.
  • History of hospitalization for past stroke, non-febrile seizures, or any seizure history other than seizure at the time of TBI.
  • Past or current history of mental retardation.
  • Pre-/post-TBI history of systemic illness with impact on central nervous system (P.I.'s decision).
  • Pre-injury psychiatric disorders for which the patient was on medication at the time of the brain injury responsible for the patient's diagnosis of TBI/PPCS.
  • Any concurrent systemic illness whose symptomatology confounds the diagnosis of PPCS (P.I.'s decision).
  • Active malignancy undergoing treatment.
  • Taking lithium.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Louisiana State University Health Sciences Center-New Orleans

New Orleans, Louisiana, 70112, United States

RECRUITING

Related Publications (1)

  • Harch PG, Andrews SR, Rowe CJ, Lischka JR, Townsend MH, Yu Q, Mercante DE. Hyperbaric oxygen therapy for mild traumatic brain injury persistent postconcussion syndrome: a randomized controlled trial. Med Gas Res. 2020 Jan-Mar;10(1):8-20. doi: 10.4103/2045-9912.279978.

MeSH Terms

Conditions

Post-Concussion SyndromeBrain Injuries, TraumaticBrain Concussion

Interventions

Hyperbaric Oxygenation

Condition Hierarchy (Ancestors)

Head Injuries, ClosedCraniocerebral TraumaTrauma, Nervous SystemNervous System DiseasesWounds and InjuriesWounds, NonpenetratingBrain InjuriesBrain DiseasesCentral Nervous System Diseases

Intervention Hierarchy (Ancestors)

Oxygen Inhalation TherapyRespiratory TherapyTherapeutics

Study Officials

  • Paul G Harch, MD

    Louisiana State University Health Sciences Center in New Orleans

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Cara J Rowe, MSW

CONTACT

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
INVESTIGATOR
Masking Details
Neuropsychological testers and neuropsychologist blinded to treatment group.
Purpose
TREATMENT
Intervention Model
CROSSOVER
Model Details: Randomized prospective controlled
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Clinical Professor of Medicine

Study Record Dates

First Submitted

March 14, 2014

First Posted

March 18, 2014

Study Start

May 1, 2014

Primary Completion

March 1, 2018

Study Completion

March 1, 2019

Last Updated

April 18, 2017

Record last verified: 2017-04

Locations