Help me understand the rule of fifths for IBCD

[Heat Miser]

My question remains. Assuming that I'd like to read about deco gas choices in deep trimix diving, where can I read newer data?

I just did Hypoxic CCR, the way my instructor dealt with it was O2 rich travel gas.

so after bailing out from CCR to
TX 15/ 55/ 30 (FN2%) at bottom (75m)

then switch to intermediate bailout
TX 35/ 25/ 40 (FN2%) @ 35 M using a rule of thirds. i.e ( 55 - 25 )/ 3 = 10 so FN2 can go up by 10 percent
then NX 50 deco gas @ 22 m

if wanted to use a rule of 5th's the intermediate bailout would be
TX 35/ 30/ 35 (FN2%) @ 35 M uning rule of fifths i,e (55-30)/5 = 5 so FN2% can go up by 5 percent
clearly hard to switch to NX 50 using rule of fifth's so could do TX 50/11 deco or 100 % O2 at 6m I guess?

but there is/was lots of discussion as to whether all this was necessary.

 

[rsingler]

After watching the RB4 video by Dr. Doolette,

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I'm beginning to believe that IBCD, while physiologically real, is of little consequence compared to R>L shunting.
So you can basically ignore my whole question from post #1, lol!

Rule of thirds is just fine.