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On9/1/00 6:41 PM, Guy Morin wrote: >Let's see here, years of clinical research, and volumes have been >published on the fact that pulmonary efficiency is negatively impacted >by breathing pure oxygen, we even advocate taking breaks from breathing >pure O2 to minimize lung tissue impact, and these folks pretend that >gas exchange is miraculously improved as a result of pure O2 >decompression? >Again, give me a break. If that isn't yet another contradiction, what >is? Guy you moron. You're confusing pulmonary oxygen toxicity (OTUs -- "lung tissue impact") with CNS oxygen toxicity. A reduction in vital decrement because of pulmonary ox tox takes more than 7 hours at a 1.6 PO2 to develop. Back gas breaks are used to extend the CNS clock not the pulmonary clock. They have no effect on lung function and aren't intended to. Even a beginner with a basic Nitrox cert knows this. If this is your level of understanding, the only "contradiction" here is that you come back alive from your dives. You shouldn't be allowed to snorkel in a kiddie pool let alone get in the ocean if you don't even understand these basic concepts. Now go back under the rock you crawled out from and leave this mailing list to people with enough of a handle on the basics to actually contribute something. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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