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I am giving a presentation on decompression theory for a few interested divers
and as part of this want to cover the concept of the oxygen window. I am happy
with the concept, and have read various articles and emails from the archives
relating to the oxygen window, but am struggling to find a numerical example
demonstrating the benefits of breathing 100% O2 (rather than 80/20) at 6m. 

I would like to show the size of the oxygen window, as in the drop of total gas
tension from arterial to venous blood, and how an increase in this drop
increases off-gassing, and how nitrogen in the breathing gas significantly
decreases this drop in total gas tension. Thanks for any help in pointing me to
a source of such an example, or providing one.

Maike
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