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- Newsgroups: rec.scuba
- Path: sparky!uunet!europa.asd.contel.com!darwin.sura.net!sgiblab!sgigate!odin!twilight!story
- From: story@sgi.com (David (Duis) Story)
- Subject: Re: Human bodies explode in vacuum?
- Message-ID: <soc85nc@twilight.wpd.sgi.com>
- Sender: news@twilight.wpd.sgi.com ( CNews Account at twilight.wpd.sgi.com )
- Organization: Silicon Graphics, Inc.
- References: <1992Nov17.193610.14444@mailer.cc.fsu.edu> <1992Nov19.103112.3699@nntp.hut.fi> <14229@cis.rand.org>
- Date: Tue, 24 Nov 92 03:03:39 GMT
- Lines: 39
-
- In article <14229@cis.rand.org> schutz@rand.ORG (Karl Schutz) writes:
- >In article <1992Nov19.103112.3699@nntp.hut.fi>, s32905u@saha.hut.fi (Jouni Ilari Polkko) writes:
- >>
- >> I have noticed in pressure chamber at 50 m (164ft) that breathing is
- >> heavier than in 1 AT pressure. However, I haven't noticed this during
- >> my dives to 50-60 m region. Maybe this is due to additional stress and
- >> poor judgement becouse of narcosis in water diving, compared
- >> to just sitting in the chamber in air.
- >
- >Question: what's the difference between breathing air in a chamber
- >under pressure
- >and breathing air (via scuba I assume :-) ) at an equivalent depth in water?
- >Your body absorbs nitrogen due to elevated partial pressures (Henry's Law).
- >Isn't pressure is pressure is pressure, whether water or air, or whatever,
- >induced? So, nitrogen (I assume) narcosis should be an equivalent
- > problem in a chamber ... yes/no?
- >
- >Is there a doctor in the house?
-
- No need for a doctor. The original poster gives you a big hint: he
- cites stress of work at depth as a factor. Because CO2 retention is
- correlated with higher narcosis, it is reasonable to assume that a
- resting calm chamber diver would be less subject to narcosis than a
- working stressed openwater diver.
-
- If you want to learn more I suggest _The Physiology and Medicine of
- Diving_ as a reference. It's one of my bibles, along with _Diving
- Medicine_. Make sure to get the 3rd and 2nd editions, respectively.
-
- For a briefer, easier introduction to this and other fascinating
- subjects like shallow water blackout, check out _Scuba Diving in
- Safety and Health_ by Chris Dueker.
-
- All three of those titles are available through DAN.
-
- Cheers,
-
- Dave Story NAUI AI Z9588, PADI DM 43922, EMT
- story@bent.wpd.sgi.com Better diving through drugs.
-