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 >================================================= >