| I have been doing those 40-60m mix dives for 2,5 years now. First on OC and now on CCR. I have never earlier had any problems with quite high CNS% loads. I think something just made me more prone to toxing on that particular dive. I think the only explanation is that the previous days near 100% CNS did not count-down as it normally does (90mins halftime).
The chamber doc was more or less out from the situation. I think I knew better and my dive partner also. They were really surprised when I jerked the mask off from my face the first time in the chamber. They asked what I am doing and I just stated that I don`t want to convulse alone here in the chamber, I am taking a break. The first onset in the chamber almoust got to the point that I would have lost consiousness, I could stop it by hyperventilating the chamber air and the diaphgram contractions stopped. The doc was really surprised. I have heard that convulsions in chamber treatment are really rare.
I was lucky that I did not start to breathe on my own. That prevented me from drowning. I guess normally breathing reflex starts after the convulsion, but in my case it did not do that. My breathing started with mouth-to-mouth.
I have also been thinking of getting a full face mask. Anyway you are not able to give your mouthpiece to your dive partner. Of course I need a good CC/OC switch also.
JH
Finland |