Quote: (Originally Posted by
Mixaddict)
Mark, we have a recent example in Florida of a female cave diver who suffered an oxtox while at 1.45 PO2. If the high PO2 that you are using at depth has just a marginal improvement of overall deco obligation, why push the margins for limited results? Just curious?
Regards,
Randy
Hi Randy,
yes, ive heard of people toxing at low po2's too but there is often more to the story. Was this lady on OC or CCR? was the scrubber exhausted? was she working? did she have a predisposition to oxtox (some people do)? who confirmed it was oxtox and not something else? What kind of medication did/does she (actually) take? was there high WOB?
I would say it was incredibly rare to get toxed at 1.45 on a level playing field
Remember my example went from 1.5 to 1.3 to 1.2 over the deco phase...who is to say that 1.1 on the bottom increasing to 1.3/1.4 for deco is going to produce different but safer numbers? If workload reared its head i would let the setpoint decay...im using a manual CCR with needle closed on such relatively short deep dives trying to stay as relaxed as possible.
Cheers, Mark