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Scott, Bill Mee , JJ and I agree with Esat on the effects of oxygen and as such do not use the high ppo2's or do decompression dives ( what we call decompression dives, not what everyone else calls them ) without a very good reason. Bill Mee has alos come up with some extremely potent antioxidants that we use, and as you know JJ is a vegetarian, so gets a massive continuous dose himself of the same thing. Scott Hunsucker wrote: > > Esat, > > >It is possible to exceed, w/i reason, the 'safe pulmonary dose' guidelines > >w/o out long term ill effects. It is just a matter of the amount of the > >discomfort one is willing to put up w/. > > We have now changed procedures and have extremely low, if not none at all, > symptoms of pulmonary toxicity. > > >(Paranthetically the jury is out on the true long term effects - the > >carcinogenic effects of free radicals). > On this I will agree. However, science thinks that everything save for sex > causes cancer! ;-) > > >It is also possible to change the threshold of the ill effects of HBO or > >prolong the latent period w/ mediactions that scavenge free-radicals, the > >agents currently held to B causal in oxtox. Nutrients additives have also > >been suggested. > All very important and all added to our regiment. > > >Still, it is also incontravertible that many if not all divers, WKPP > >divers included, do report 'chest burning' when exposed to protracted deco > >w/ high ppO2. > We have handled/reduced this problem with the addition of 25% He to all > deco gases, except for O2. Easier to breath, soothing effect on possibly > irritated tissue. Prior to this, on shorter dives, we would have > reports/symptoms of pulmonary toxicity. For this type of diving (BT times > common in the WKPP, not your average BT) it is sort of like mask rings, and > bubbles, signs that you have been diving. After the addition of the He, no > ill effects. Pulmonary and other oxygen problems are definitely a limiting > factor to human performance at pressure. > > >Maneouvers like air breaks do ameliorate this but do not show up in the > >stnd OTU calculations wh/ require a 24 h break before the pulmonary clock > >is set to 0. Thus the calc values R artificially elevated relative to > >actual expo values. > Also true for the CNS calculation given earlier, but this was disclosed by > us. We do not know how to calculate with the breaks (yet??). > > >New data always becomes available. The validity of the data depends on > >not who publishes it but whether it can B reproduced by an independent > >investigator. Obviously all the details of the protocols used to generate > >the data have to B made avialble for that to happen. > > I do not know of many that would want to reproduce what we do, but we are > continuing to do it, and if enough data is ever collected, then perhaps > there will something for others to work with. > Scott Hunsucker > > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.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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