> >normal oxygen % in the air we breathe is (if I remember rightly) >around
> 5.
> >For hyperbaric "above pressure" you put the patient in a confined >space
> and add oxygen to around 7% or more.
>
> The Earth's atmosphere contains about 21% oxygen, by volume.  Low oxygen
> is considered ~19%, too high ~23% (or is it 23.5%).  At around 16% or so
> even the most vigorous will start to get disoriented.
>
> I imagine that hyperbaric (meaning higher pressure) may introduce some
> oxygen, but probably only a couple of %'s higher than normal as noted.
>
> I know nothing about this procedure BTW.  My knowledge is in engineering.
>
> James Crocker

Hyperbaric oxygen is starting to be used in some cases of severe
infection, and has had a little success.  I think it's still
experimental.

Patty (who remembers EVERYTHING, especially if the information is
useless to her)