What Researchers Did
Researchers reviewed published, peer-reviewed prospective and controlled clinical trials on hyperbaric oxygen therapy (HBOT) for mild to moderate traumatic brain injury/persistent postconcussion syndrome (mTBI/PPCS) symptoms.
What They Found
This review found that hyperbaric oxygen therapy (HBOT) is effective for mTBI/PPCS symptoms, with therapeutic effects demonstrated in 5 out of 5 peer-reviewed clinical trials. Doses of oxygen at ≥21% O2 and pressures >1.0 ATA improved baseline measures. The authors also noted that pressurized air controls (1.2-1.3 ATA) are therapeutically active and bias results.
What This Means for Canadian Patients
This study suggests that HBOT may be a beneficial treatment option for Canadians experiencing persistent symptoms after a mild traumatic brain injury. However, patients should be aware that some clinical trials may use control groups that are not truly inactive, potentially overstating the specific benefits of pure oxygen.
Canadian Relevance
This study has no direct Canadian connection.
Study Limitations
A key limitation identified is that many existing clinical trials for HBOT use active pressurized air as a sham control, which can bias results.