Quote:
| Originally Posted by Mark Chase 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 |
I am an instructor with good number of dives and certs under my belt, and it really concerned me that until I did my GUE fundies last year I simply did not know that there was a relationship between narcosis and CO2. I accept now that was a hole in my own knowledge, but why is this information not part of recreational diver training where the emphasis is on the relationship between depth and narcosis? Is it just the PADI OWD course that does not discuss this?