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scottk@hc*.co* wrote: >So, what's the deal? Why does helium, which is a >smaller, lighter and "friendlier" molecule cause >increased deco obligations... Scott, I am not an anesthesiologist, nor do I have personal experience with Helium diving as do many on this list. It is my understanding that Helium is absorbed faster than Nitrogen in most, if not all, tissue compartments, including fatty tissues. Therefore the decompression obligations will equal or exceed Nitrogen, and may be significantly longer. The main reason Helium is used to replace Nitrogen in a breathing mixture is because it is non-narcotic. I cannot comment on the Helium willies, but suspect that this phenomenon has a good degree of individual susceptibility, much like Nitrogen narcosis. It is also my understanding that the Navy Heliox tables may not be practical for technical diving, and based on some of the postings on this list, the tables may need to be rewritten. I am fascinated by some of the dives you folks do and appreciate the info. Keep it safe. Michael J. Black, M.D. ===== __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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