Quote:
| Originally Posted by Andy Kerslake Rich
Yes I did mean that fast tissues offgas/ongass very quickly and will start on-gassing during the ascent, so if at 6m using 100% I cannot ongas any inerts and my off-gassing is maximised, due to the O2 Window. But if I use 80% or any gas containing Nitrogeen I wll still on-gas the fast tissues.
If you look at any of the deco programmes that produce a tissue pressre graph, you will see this effect.
Andy |
Hmmm. But surely you can only ongas N2 if the ppn2 of what you're breathing is greater than the compartmental ppn2. I agree you'll ongas inerts if you spike the N2 for example, by switching from 15/50 to EANX 36 at 30m for example. However, unless you're diving something like 10/80 I can't see how a switch to EANX 80 causes ongassing....
No matter how fast the tissue is (let's say it's infinitely quick) you still need a higher inspired ppn2 than tissue ppn2 to ongas and I can't see how this happens at a shallow switch to EANX80.