>the opposite is not true. Think about it, if all DCS symptoms went away with >recompression to 60fsw, then no one who got to a chamber before they died would >have any permanent problem and no one would die after reaching the chamber. > It simply isn't true. This is one of those situations where you can prove >the positive (DCS) but not the negative (not DCS). Time to treatment being the biggest factor with regards to immune response to bubbles, permanent problem, death after treatment etc. Which certainly validates the proponents of IWR in contingency planning especially when diving remote sites in my opinion. -----Original Message----- From: wgrogan@dc*.ne* To: SRSCHIRATO@BK*.co*, OEA51@go*.co*, icallicrate@ho*.co*, techdiver@aquanaut.com Date: Tue Oct 02 15:23:33 PDT 2001 Subject: Re: RES: Re: [E-CAVERS] BIG Bull and Squeeze >>From the message below: >> >>"You may be confusing the "oxygen challenge", whatever that is, with a test > >>>> >of pressure. The test of pressure is done in a chamber when DCS is >>suspected. >>>> >If the victim feels better when pressurized to say, 30', then the pain > >>is >>>> >probably DCS and NOT something such as overuse or a bruise. If there is > >>no >>>> >improvement at 30' or 60', then the problem is NOT DCS. >> >>Question: should all DCS symptoms disappear when the victim is recompressed > >>(therefore eliminating the possibility of DCS if the victim does not show >>any improvement during the "pressure test")? My question is related to an >>article about the immune response to bubbles and symptoms of DCS even after > >>the bubbles were already treated. >> >>Regards, Sergio > > >Sergio, > >Good question. The answer is that you are on the right track. If the symptoms >go away with O2, then return when O2 is stopped, then its probably DCS. If >the symptoms go away with recompression, then it is likely to be DCS. However, >the opposite is not true. Think about it, if all DCS symptoms went away with >recompression to 60fsw, then no one who got to a chamber before they died would >have any permanent problem and no one would die after reaching the chamber. > It simply isn't true. This is one of those situations where you can prove >the positive (DCS) but not the negative (not DCS). >Wendell >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. ___________________________________________________ GO.com Mail Get Your Free, Private E-mail at http://mail.go.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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