Re: CPAP - was Re: Bush nazis to get badges.

Here, David Goldfarb <goldfarb@xxxxxxxxxxxxxxxx> wrote:
In article <l33r74tv6c5u6h6s7cqorcn2hqhs6lke6c@xxxxxxx>,
mike weber <fairportfan@xxxxxxxxx> wrote:
On Wed, 16 Jul 2008 05:17:16 +0000 (UTC), goldfarb@xxxxxxxxxxxxxxxx
(David Goldfarb) wrote:
10 mm of water,
which corresponds to about 1/100 of one atmosphere

Ummm, lessee - atmospheric pressure is about ten meters - 33 feet of
water, anyway. roughly, as i recall - which is 10,000 mm, so it's more
like 1/1000 of a bar, no?.

I checked it again, and you're right, I slipped a decimal point.
So if I'm having trouble talking with .1% of an atmosphere pressure
difference, whatever difference Heinlein might have been thinking of
would pretty certainly be out of the question.

Leaving aside the fact that once you approach 10% of an atmosphere
pressure difference, your lungs have ruptured and you are experiencing
a surprisingly painful death by drowning in blood.

I can't think of a scenario in which an ambiently pressurized oxygen
mask isn't good enough, but an oxygen mask that adds pressure in your
lungs -- within safe limits -- is. The safe limits are too low.

--Z

--
"And Aholibamah bare Jeush, and Jaalam, and Korah: these were the borogoves..."
*
It's a nice distinction to tell American soldiers (and Iraqis) to die in
Iraq for the sake of democracy (ignoring the question of whether it's
*working*) and then whine that "The Constitution is not a suicide pact."
.

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