Description:

Positive treatment effects of HBOT have been reported in a number of studies, while others
have found no demonstrable effect. Studies to date have evaluated effects on a variety of
conditions, and utilized diverse research methods and generally await replication. Despite
its increasing usage in children with autism, and the preliminary anecdotal reports
indicating positive outcome, there is a paucity of well-controlled studies of HBOT in this
population, which precludes clinicians from recommending and/or implementing it as an
evidence-based treatment. It is clearly important therefore, to evaluate carefully the
treatment effects of HBOT using robust research designs in this population.

Hypotheses

– Hyperbaric Oxygenation Therapy will be associated with a positive effect on symptoms of
autism.

– Treatment gains obtained from Hyperbaric Oxygenation Therapy will be maintained at
follow-up.

Specific Aims

– Evaluate the effects of Hyperbaric Oxygenation Therapy on behavioral and cognitive
symptoms of autism before, during, and after treatment.

– Determine the percentage of children with autism who respond positively to 80 HBOT
treatment cycles and the extent to which they do so.

– Determine the extent to which any observed treatment effects are maintained up to three
months after HBOT.

Study duration: Two weeks baseline, 10-15 week acute phase, with 1- and 3-month follow-ups.

All participants will spend one hour per session in hyperbaric oxygen chambers, for a minimum
of 6 and a maximum of 10 sessions per week. A total of 80 cycles of one hour compressions
must be completed within 15 weeks for all participants

Treatment Group: Pressure and Frequency

– 1.3 atmosphere absolute (ATA)

– 24% oxygen

– One session = 1 hour

– Total of 80 cycles of one hour compressions must be completed within 15 weeks.

Placebo Group: Pressure and Frequency

– Close to ambient air pressure, but the chamber needs enough pressure to inflate: 1.05 to
1.1 atmosphere absolute (ATA)

– Room Air

– One session = 1 hour

– Total of 80 cycles of one hour compressions must be completed within 15 weeks.

Condition:

Autism

Treatment:

Hyperbaric Oxygenation Therapy

Start Date:

November 2006

Sponsor:

The Center for Autism and Related Disorders

For More Information:

https://clinicaltrials.gov/show/NCT00404846