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To: HeimannJ <jheimann@is*.nd*.gt*.co*>
Subject: RE: Oxygen narcosis (?)
From: Richard Pyle <deepreef@bi*.bi*.ha*.or*>
Cc: techdiver <techdiver@opal.com>
Date: Wed, 29 Jun 1994 11:40:23 +22305714 (HST)

On 29 Jun 1994, HeimannJ wrote:

> One explanation of this was given to me by a friend who is a blood
> pathologist as well as being a gas diver. He says that high PPO2s tend to
> cause vascular dilation in the brain, which increases the delivery of
> nitrogen to those tissues, resulting in increased narcosis.  I'm not a
> physiologist, so I'm just passing this one along.  

Interesting....

But I had always heard that high PPO2 was a vaso-contrictor, not a vaso
dialator.  Or are there too many other factors to be able to draw a sound
generalization?

Aloha,

Rich

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