This may seam like a crazy idea at first but bare with me.


Situation: Diver finds himself with considerable OC deco to do but has lost some or all of his intermediate deco gases.

He has left a tank of 100% O2 and a tank of very hypoxic trimix.

Given that the lung doesnt fully exchange all its gas volume on each breath it would I pressume act a bit like an accumilator and to some degree smooth out/mix the gas contents.

You can see this effect to some extent on the surface. Breath in normally (lung full of air) breath out - then breath in O2 and blow contents across a o2 sensor - you dont breathe out 100%.

I pressume it should be easy enough to model if we know the approx exchange rate in the lung.


So given that - could a diver during a dive to some extent 'mix' his own deco gas in his lung (in an emergency) by taking one breath of O2 then one of mix (or whatever ratio gave the right mix)?

Im sure there will still be large fluctuations in ppo2 - but given that we know the human body can tolerate very high ppo2s provided the duration is very short and is interspersed with longer lower ppo2 breathing. )see previous thread here someplace) Im wondering how the balance of risk is doing this compared to the alternative of not being able to complete deco.




[please no dumb ass comments - I know this is not a good idea blah blah blah- I know there are a million ways to avoid ending up in this situation blah blah blah - Ive done my padi nitrox course - Im just looking for info that could lead to any possible real emergency options to keep in the toolkit - you never know when 'crazy' tool may be the only thing that keeps you alive]