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--0-846930886-955499473=:28648 Content-Type: text/plain; charset=us-ascii Scott: Is there a number of days one should wait to return the body to close enough to normal so that culmulative effects are not an issue? Scott Hunsucker <swhac@pc*.gu*.ne*> wrote: I will cover the very basics of pulmonary toxicity first, so that we are all on the same page, and then, in a separate post, cover some of the physiology behind, enzymes, etc., that is associated with this. Pulmonary oxygen toxicity can be defined as a progressive failure of lung ventilation that is brought about by a prolonged exposure to oxygen partial pressures over 0.6 ATA, eventually leading to hypoxia by decreased oxygen tension in the blood supply, and an increase in the distance that oxygen must diffuse across the alveoli. While it is a concern, it is not normally seen within the time frames of most divers; however, repeated exposures in a short period, breathing oxygen at the surface between dives, and chamber rides after diving will have a cumulative effect and can lead to pulmonary problems. --0-846930886-955499473=:28648 Content-Type: text/html; charset=us-ascii <P>Scott:</P> <P>Is there a number of days one should wait to return the body to close enough to normal so that culmulative effects are not an issue?</P> <P> </P> <P><B><I>Scott Hunsucker <swhac@pc*.gu*.ne*></B></I> wrote:<BR> <BLOCKQUOTE style="BORDER-LEFT: #1010ff 2px solid; MARGIN-LEFT: 5px; PADDING-LEFT: 5px"> <P> I will cover the very basics of pulmonary toxicity first, so that we are all on the same page, and then, in a separate post, cover some of the physiology behind, enzymes, etc., that is associated with this.<BR><BR> Pulmonary oxygen toxicity can be defined as a progressive failure of lung ventilation that is brought about by a prolonged exposure to oxygen partial pressures over 0.6 ATA, eventually leading to hypoxia by decreased oxygen tension in the blood supply, and an increase in the distance that oxygen must diffuse across the alveoli. While it is a concern, it is not normally seen within the time frames of most divers; however, repeated exposures in a short period, breathing oxygen at the surface between dives, and chamber rides after diving will have a cumulative effect and can lead to pulmonary problems.</P></BLOCKQUOTE> --0-846930886-955499473=:28648-- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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