> Rich,
> In my haste to point out a different viewpoint and get back to work, I 
> neglected to mention that "THE REASON" that Kellon and the others would 
> suggset the "Blow and Go" approach is to get from 10 ata to 6 ata quickly, 
> where they can do a gas switch, i.e., Nitrox. The ppO2 is now low enough, 
> and more efficient  offgassing will be more effective...  The higher 
> saturation attained in a slow initial ascent will do more harm in delaying 
> the gas switch which would occur at 6ata.. My apologies to Jack for the 
> omission.

Hi Dan,

But that would still assume that the gas gradient across the alveolar 
membrane is the only (or at least most important) factor.  From what I 
understand about bubble theory, we should be paying closer attention to 
the gradient across the surface of the bubbles in our blood.  These fast 
deep ascents, while making sense from an alveolar gradient perspective, 
are a bad idea from a bubble perspective.

Of course all I really know is that I used to feel lousy after dives 
doing the "Blow-n-Go" routine, but I feel WONDERFUL after dives (deeper 
and longer, even) if I keep the deep ascent slow.

Please understand that I'm not attacking you personally, I'm just 
attacking the myopic "old wisdom" of managing decompression.

Aloha,
Rich

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