----- Original Message -----
From: "Lee Bell" <[log in to unmask]>

>
> That's a pretty serious mistake.  I presume the diagnosis was DCS, but if
> the rebreather did not sense the gas and adjust PPO2 for the actual versus
> the presumed gas, I guess it could have been oxygen deprivation blackout
as
> well.  Do you know which it was?  If O2 deprivation, I'd be interested in
> knowing more about how/if semi closed rebreathers address the gas being
> used.  Heck, I'd be interested even if it was not a contributing factor.

My guess, without knowing more would be death by drowning after blacking out
from lack of O2 due to not having more O2 coming into the system to replace
what was being metabolized...

Mike