New autism treatment hope

Kids with autism may benefit from a series of treatments in a pressurised chamber with boosted oxygen levels.

The results of a small trial indicate that hyperbaric oxygen therapy, as it's called, improves language ability, social interaction, and other functions in such children.

The trial involved 62 children, from two to seven years of age, diagnosed with autistic disorder. Dr Daniel A. Rossignol, from the International Child Development Resource Center in Melbourne, Florida, and colleagues, randomly assigned the children to 40 one-hour sessions of hyperbaric therapy or sham treatment.

The hyperbaric group was treated with 24% oxygen at a pressure of 1.3 atmospheres while the comparison group received a normal level of oxygen (21%) in a slightly pressured room (1.03 atmospheres). To be safe, the active treatment was actually a relatively low level of hyperbaric therapy; treatment for carbon monoxide poisoning, for instances, is usually given at two atmospheres with 100% oxygen.

What the study revealed
The team found that, compared with the sham treatment, hyperbaric therapy significantly improved the kids' overall functioning, grasp of language, social interaction, and eye contact.

Moreover, 80% of hyperbaric-treated patients were rated as improved compared with 38% of controls, according to the report in the online journal BMC Paediatrics.

On a behaviour checklist, the hyperbaric treatment group had significant improvements in irritability, hyperactivity, repetitive behaviours, and speech, while the control group did not.

Further analysis of the results showed that children who were at least five years old and those with lower initial autism severity derived the greatest benefits from hyperbaric treatment.

No treatment complications were noted with hyperbaric therapy, which was well tolerated.

"Given the positive findings of this study, and the shortage of proven treatments for individuals with autism, parents who pursue hyperbaric treatment for their child with autism can be assured that it is a safe treatment modality at the pressure used in this study, and that it may improve certain autistic behaviours," Rossignol's team concludes. – (Reuters Health, March 2009)

Read more:
Rise in autism over-estimated?
Autism/vaccine data faked: report

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