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Tom,

One minor nitpick.  Looking at the IANTD limits, and plotting them out,
they are NOT linear.  Plus it is obvious that IANTD is following
NOAA's technique of bundling both CNS and OTU's into the same
limits (ie, you cannot be serious that there is a CNS limit below
1.0 ATA., and especially at PO2's down and around 0.6 to 0.5 ATA -
you are showing approximatley 6% of the CNS limt per hour at 0.6ATA,
which works out to approximately 100% of the limit at somewhere around
16-17 hours.  Patients have been on PO2's at these levels for multiple
days without ever having any symptoms of CNS toxicity - but pulmonary
tox becomes a problem).

Would you care to explain further?????


John  

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