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"Michael J. Black" wrote:
>
> (Name withheld), a physiologist and IANTD instructor, responded
> to me along the same lines that George Irvine has stated previously,
> i.e. if heavy exercise is contemplated shortly after a dive, then
> the diver should try to get as close to heliox as possible. Now what
> is your point Wendell Grogan, M.D., ANYTHING? Michael J. Black, M.D.
>
> --- wendell grogan <wgrogan@dc*.ne*> wrote:
> > OK, I'm not a WKPP diver, nor am I prone to flaming, I'm just a
> > neurophysiologist.
> > Query, have you ever read ANYTHING about gas physiology?
> > Wendell Grogan, MD
> > "Michael J. Black" wrote:
> > > Subject: Re: Helium
> > > Date: Mon, 20 Mar 2000 13:43:58 -0800 (PST)
> > > From: "Michael J. Black" <mjblackmd@ya*.co*>
> > > To: Aquanaut Mail <techdiver@aquanaut.com>
<snip>
> > > Now we know helium, being the rapid diffuser that it is, is
> > > quicker to off-gas than nitrogen. And if you're worried about
> > > slow nitrogen desaturation after a dive, and want to minimize
> > > risk of bubble formation (of any gas), then it would be ideal
> > > to replace the nitrogen with helium. So going back to Ben
> > > Wiseley's original question: assuming cost is no object, the
> > > ideal mix for a 60ft dive is heliox, because nitrogen desat.
> > > is eliminated completely. And I could safely do my bike race
> > > the next day, or even that afternoon. Agree?
Michael, all flames aside, you are missing the point. There
really is nothing to agree or disagree with here. You are making a
hypothesis that diving an unknown heliox mix at a depth of 60 feet of
some unknown specific gravity of water for an unspecified amount of time
would be the best if one wished to ride their bike within an unspecified
amount of time for some unpredictable duration. What the hell kind of
hypothesis is that?
You are attempting a hypothesis based on nothings. You are asking
everyone else to prove your hypothesis based on nothings. Your argument
to prove your case, is that a nameless physiologist and IANTD
instructor, responded to you along the same lines that George Irvine had
stated previously, "i.e. if heavy exercise is contemplated shortly after
a dive, then the diver should try to get as close to heliox as
possible."
I submit to you, that if your nameless physiologist or George
Irvine made that statement in that unqualified, unquantifiable manner,
than perhaps you should ask them to prove your hypothesis under those
unquantifiable intermediaries. I suggest to you, that you have taken
that statement out of context. You say, "but the goal is to quickly
eliminate the risk of bubble formation, completely." Hint: release
ambient pressure slowly, linearly and try O2, for any inert gas --
period. -OR- Are you really trying to make reference to some post
decompression stress? Ask a question, or form a logical hypothesis, and
offer up some logical defense. Then, people can either add to your
argument, or break down where its failing. Hint#2.....model some gases
under various dives for a while.
--
Randy F. Milak
Windsor, Ontario
~ Remember to always PILLAGE before you BURN! ~
--
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