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***jradomski*** · 27th April 2005, 04:06

Quote: (Originally Posted by ROB DAVIE)

Joe,

Just a couple of thoughts, if I may. While divers do tend to build up some tolerance, research has shown that our tolerance varies between individuals, and varies within individuals from day to day.

Also, research tends to show that CO2 can potentiate O2 toxicity, but its presence is not necessary for it to occur.

Just my PPO2's worth.

Cheers!

Rob

1) I agree.. Tolerence SEEMS to increase on consecitive days... 1.6 really is that extreme I remember the days I used to use that as a bottom po2 and deco on a 1.8 like many militaries do..
I have a firend thas a comex/hse diver saturation diver and he is required to take oxygen tolerance tests every several months(to stay current),, he has to survive an exposure of ~3.0 for 30 minutes (If I remember they peak the test at a 3.5) while on a stationary bike..

2) CO2is amajor factor.. for Oxygen toworkon its own the exposure really has to be extreme..

27th April 2005, 04:06	#41 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,096	Quote: (Originally Posted by ROB DAVIE) Joe, Just a couple of thoughts, if I may. While divers do tend to build up some tolerance, research has shown that our tolerance varies between individuals, and varies within individuals from day to day. Also, research tends to show that CO2 can potentiate O2 toxicity, but its presence is not necessary for it to occur. Just my PPO2's worth. Cheers! Rob 1) I agree.. Tolerence SEEMS to increase on consecitive days... 1.6 really is that extreme I remember the days I used to use that as a bottom po2 and deco on a 1.8 like many militaries do.. I have a firend thas a comex/hse diver saturation diver and he is required to take oxygen tolerance tests every several months(to stay current),, he has to survive an exposure of ~3.0 for 30 minutes (If I remember they peak the test at a 3.5) while on a stationary bike.. 2) CO2is amajor factor.. for Oxygen toworkon its own the exposure really has to be extreme.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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