Well, I got that wrong!  apologies.  I should have said 1/5, not 5%.  Is
there a hyperbaric expert out there who can put us right?    Geoff

-----Original Message-----
From: James Crocker <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Tuesday, October 27, 1998 10:08 PM
Subject: [P-F] Hyperbaric oxygen


>>From:    Geoff Stanford <[log in to unmask]>
>>
>>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
>=================================================
>"The future cannot be predicted, but futures can
> be invented." - Dennis Gabor
>=================================================
>