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Drmike · 1st November 2007, 14:15

My experiences for what they are worth have been like this;

Retained CO2 from over exersion/stress:

RMV probably I would imagine well over 50 before finally stop trying to convince myself im not having a problem

Bail to OC.

RMV will continue to rise it wont drop unless activity is stopped and I calm myself down. (on or off the loop recovery just as fast if retained CO2, key is to stop activity and calm down)

This battle to calm down breathing (retained co2 is almost as much mental as physical)

With all activity stopped and thinking happy thoughts RMV drops to levels where I feel ok again (no panic/stress feeling) after less than say 2 mins (this has been my experience) I go back to the loop and see if it was retained or scrubber failure.

I have had more retained CO2 issues than CO2 hits but the recovery time (at those times) for me was similar in both cases. But I think its really a matter of how bad the hit is (or how bad you let it get before you bail) leave it long enough and recovery would i imagine be much longer too.

But I seriously seriously doubt your RMV will be in the low 20s for quite some time after you bail (other stress raisers like being on limited bail out vol would likely kick in)

If I was to guess Id say maybe expect inital RMV 50+ then recovery (of main CO2 symptoms) after maybe 2-3 mins with RMV reducing steadily to slightly highet than normal levels over say a 10-15min period (this is just my guess based on my limited experience - it may be complete bol1ocks)

YMMV

1st November 2007, 14:15	#4 (permalink)
Drmike Custom Title Allowed! Current Rebreather/s: MK 15.X Ouroboros Other CCR Home Build Other Rebreather/s: Inspiration Classic Other CCR Home Build Join Date: Feb 2005 Posts: 3,157	Re: C02 Retention / Decay times My experiences for what they are worth have been like this; Retained CO2 from over exersion/stress: RMV probably I would imagine well over 50 before finally stop trying to convince myself im not having a problem Bail to OC. RMV will continue to rise it wont drop unless activity is stopped and I calm myself down. (on or off the loop recovery just as fast if retained CO2, key is to stop activity and calm down) This battle to calm down breathing (retained co2 is almost as much mental as physical) With all activity stopped and thinking happy thoughts RMV drops to levels where I feel ok again (no panic/stress feeling) after less than say 2 mins (this has been my experience) I go back to the loop and see if it was retained or scrubber failure. I have had more retained CO2 issues than CO2 hits but the recovery time (at those times) for me was similar in both cases. But I think its really a matter of how bad the hit is (or how bad you let it get before you bail) leave it long enough and recovery would i imagine be much longer too. But I seriously seriously doubt your RMV will be in the low 20s for quite some time after you bail (other stress raisers like being on limited bail out vol would likely kick in) If I was to guess Id say maybe expect inital RMV 50+ then recovery (of main CO2 symptoms) after maybe 2-3 mins with RMV reducing steadily to slightly highet than normal levels over say a 10-15min period (this is just my guess based on my limited experience - it may be complete bol1ocks) YMMV __________________ Cave diving is a sport Wreck diving is a sport Diving in general is a sport 'Rebreather diving' is not a sport its the delusional obsession with a highly dangerous and often inappropriate piece of equipment Last edited by Drmike : 1st November 2007 at 14:25.
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