Mailing List Archive Mailing List Archive
I found the abstract for the first article and the reference in DiveMed. I think this is a typical case of trying to apply basic research on the healthy body to a similar, but not identical situation during an illness. Basically, he is talking about the effect of hyperbaric oxygen (supplied as an argon/oxygen mix- not 100% O2) on elimination of nitrogen through the lungs of normal people in a chamber. The second article, I haven't found, but the title suggests that it deals with a state we already know is bad for deco- hypercarbia (too much CO2). The point of hyperbaric treatment is to eliminate nitrogen bubbles, and then secondarily to eliminate excess nitrogen so that the bubbles don't re-form when the pressure is dropped back to 1 atm. The research didn't show that nitrogen stops leaving the body, rather, it doesn't leave as fast when the subject was subjected to hyperbaric oxygen as it did when he was kept slightly hypoxic. Further, there was no significant difference in nitrogen elimination between hypoxic and normoxic inspired gas. Relevance to Nitrox- 0 Relevance to emergency use of 100% O2 on the surface- 0 Relevance to use of 100% O2 in hyperbaric treatment- 0 The most I could conclude from this is that increasing the speed at which excess nitrogen in eliminated from the blood in may not be among the many known benefits of oxygen treatment for DCS. This doesn't alter the fact that for deco, the 100% oxygen clearly speeds up elimination of nitrogen when compared to air because 1) it doesn't have nitrogen in it, and 2) the oxygen window. Wendell Grogan ===== "Experts built the Titanic, but volunteers built the Ark!" Pat Croce, Owner NBA Philadelphia 76'ers __________________________________________________________________ Do You Yahoo!? Gesendet von Yahoo! Mail - http://mail.yahoo.de Yahoo! Mail auf Ihrem Handy? - http://mobil.yahoo.de -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]