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I am not sure what the author means by 'in the field', but in the field, but out of the water, +ve pressure ventilations can B provided using Mouth to mouth or nose Pocket mask, w/ or w/o O2 enrichment, to mouth Bag valve mask Demand valve used in the +ve pressure mode. Current practice limits in water ventilations to mouth to mouth or mouth to snorkel. Some advocate the use of a pocket mask. The scuba regulator appears impractical for a number of reasons - especially since it is relatively cumbersome to seal nose while feathering gas delivery all w/ one hand w/ 3 finger mitts. I thnk it will B cumbersome w/ gloves. The scuba regulator is alos assailed for its high flow rates & high pressure. The latter probably is not as great an issue as some make as demand valves have back P settings of 60 cm of H2O. Flow rate due to gastric insuflation that could ensue becomes an issue, again best kept below 40 l/min. Despite an eloquent treatise recently posted on restoring O2 rapidly to restore Hb (no correlation :-), Hb is restored through inducing erythropoeitin wh/ is induced via hypoxia) & the rapid loss of blood O2 below 100 mm Hg (100 mm Hg of what? Not arterial pO2 as the Bohr cooperativity curve maintains 80% sat of HbO2 @ pO2arter of 40 mm Hg), there is no question that rapid restoration of 'fresh air' is imperative. However at no time should the dictum - do no further damage be forgotten. Safe bubbles Esat Atikkan Safe bubbles Esat Atikkan > > > > > >(Quote) > > >Only one device allows for the delivering of > > artificial ventilation in the > > >field. This is the pocket mask with an oxygen > inlet > > valve. This also allows > > >for the use of mouth-to mouth assistance without > > the unpleasant (and > > >possibly dangerous) aspects of direct oral > contact. > > Regulators would also > > >have difficulty in controlling the inspiratory > > volume and can lead to > > >overpressure injuries. > > >(unquote) > > > > > >I would like to think that I have provided more > > than enough evidence to > > >support my case, and that the debate could stop > > here. However I have a > > >sneaking suspicion that there are some who will > > simply choose not to listen > > >and will continue to advocate this dangerous and > > unproven practice. > > > > > > I hope you all will think carefully on > > this issue, and if you haven't > > >already done so get some proper training from DAN > > (or similar organisation) > > >so that you WILL know what to do if the need > > arises. Thanks also to those > > >of you who have emailed me privately with your > > support. > > > > > >Safe Diving, David. > > > > > >-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > > >Ocean Internet - "The Quality ISP" > > >http://www.ocean.com.au/info.html > > > > > >-- > > >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'. > > > > __________________________________________________ > Do You Yahoo!? > Thousands of Stores. Millions of Products. All in > one place. > Yahoo! Shopping: http://shopping.yahoo.com > __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one place. Yahoo! Shopping: http://shopping.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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