User talk:Drthomasa

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Hello,, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful: I hope you enjoy editing here and being a Wikipedian! Please sign your messages on discussion pages using four tildes ( ~ ); this will automatically insert your username and the date. If you need help, check out Questions, ask me on, or ask your question on this page and then place  before the question. Again, welcome! RexxS (talk) 03:51, 22 January 2010 (UTC)
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 * Thanks for your very welcome overhaul of this article. Would you have a look and see if you can find a source that supports your text about the risk of oxygen toxicity, please? My understanding is that the reduced risk in soft/mild chambers is due to the limiting of partial pressure of O2 to around 1.4 bar, coupled with the exposure limited to an hour or so - thus keeping within traditional limits for both CNS toxicity and pulmonary toxicity. At present, it reads as if it's the reduction of O2 fraction from 100% to 96% that reduces risk, whereas this is surely only a very minor factor. See: for a review of the background. --RexxS (talk) 04:03, 22 January 2010 (UTC)