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On Aug 22 you write:

<snip>

> I am aware of folks who *deliberately* use scooters to increase their rates
> of decent on what they call a "buzz run". Personally I think they're nuts
> (I do my darnest to *AVOID* narcosis) but they demonstrate other dangerous
> diving practices so I avoid them in general... but that's another story.

<snip>

> Robb W


Robb, 

	I have also been told (not by anyone with a medical background) that 
extremely rapid rates of descent will cause the blood to become acidotic.  That
is the buffers in the blood cannot compensate for the pH change, due to the 
increase in ambient pressure, quickly enough.  This is turn is said to actually
cause the blood to froth, thereby contributing to nitrogen bubble formation.
Can you, or anyone else, shed any light on this?

Brian
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