Any reported cases of Ox Tox between 1.4 and 1.6?

[deepblueglow]

First off, I'm not looking to start a 1.4 vs 1.6 debate! The conventional wisdom of 1.2-1.4 for diving and 1.6 for deco is perfectly sound.

I've been poking around on this subject for a while now though, and what I can't find is how exactly the 1.4 idea came about. I know there are loads of cases of Ox Tox at 1.8 and above, and that it's known to be really insidious. There's a great anecdote in The Last Dive about a diver who thought 2.0+ was fine, he actually got away with it for a dozens of dives before it finally bit him and he didn't come back up.

Are there any documented cases in literature, or even just well known examples, where divers had a seizure somewhere below 1.6? Or has theory just advanced to the point where we can say that odds are, it will bite someone sooner or later?

 

[tursiops]

Some History On Nitrox

Copied or not, nice summary - Thanks. I know that NAUI sanctioned Nitrox training for recreational divers in 1992 (I believe this was the first Traning Organisation to sanction Nitrox diving). Umm, sort of. NAUI likes to embellish this story, it was more like 1997 when they adopted it as...

scubaboard.com

 

[Underwater Tourist]

Weren’t there two ladies who toxes at 1.6, which also added to the speculation that women might be more susceptible to oxtox?

I read it awhile back somewhere, made a mental note, and never came back

Could be totally wrong..

 

[tursiops]

Weren’t there two ladies who toxes at 1.6, which also added to the speculation that women might be more susceptible to oxtox?

I read it awhile back somewhere, made a mental note, and never came back

Could be totally wrong..

Sex and Sensitivity to Oxygen Toxicity

The most feared manifestation of acute oxygen toxicity is a loss of consciousness and tonic-clonic convulsions (seizures). The threat of oxygen-induced seizures in scuba diving becomes real when th…

thedivelab.dan.org

 

[DOBY]

There was an unexplained suspected Ox tox cave diving fatality back in 2007 were the pO2 was within the recommended 1.2-1.4ata range. Gas was Tmx 24/25 to max depth of 150 feet. Some cave divers went to using EAN30 instead of EAN32 for most 100-120ft deep cave dives after that.

2007-07-14 Incident – IUCRR

iucrr.org

 

[tursiops]

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