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Date: Mon, 18 Mar 1996 07:40:52 -1000 (HST)
From: Richard Pyle <deepreef@bi*.bi*.Ha*.Or*>
To: Trey Irvine <gmiiii@in*.co*>
Cc: Carl Heinzl <cgh@ma*.ai*.mi*.ed*>, gmiiii@in*.co*,
bill_m@wi*.co*, techdiver@terra.net
Subject: Re: Hypercapnia

>   Carl, the CO2 dilates the blood vessels in the brain - you can figure the
rest 
> yourself as far as it relates to Oxtox. -G

But the high PO2 constricts them.  As far as I know, we still have little 
more than informed speculations about the mechanisms by which increased 
workload potentiate CNS O2 toxicity.  CO2 is probably a big factor.

Aloha,
Rich

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