Quote:
| Originally Posted by James The Badger This is amusing AND sobering viewing if you want to see a deep air dry dive!
From my own experience I have guided dives as shallow as 18m and had divers almost non responsive with narcosis and then not been able to remember a thing about it on the surface.
I would also like to know why there is not more discussion about the effects of CO2 and its impact on narcosis at the recreational training level? |
Co2 is an order of magnitude more narcotic than Nitrogen.
C02 retention is brought on by many things but they can rely be reduced to the big two: poor breathing technique and smoking.
Skip breathing, shallow rapid breathing and increased breathing resistance due to badly set up regulators being the primary culprits.
C02 is retained and has a cumulative affect in the body. It gradually builds up till it hits you. End result is massive narcosis often mistaken for a wave of vertigo or other spinning sensation.
We are always concerned about C02 hits on CCR but in fact i have had never suffered a C02 hit on a CCR but i have had a few on OC.
ATB
Mark Chase