[DeepThought]

A great thread you started here Sebastian.

Originally Posted by cebaztian

I do not believe that the small increase of pressure from let say 60-70 causes bloodvessels to break in the alveolis.

Could be the straw that broke the camel's back.

Originally Posted by cebaztian

I also believe that a significant factor for producing squeeze symptoms are strong contractions at depth. But I also believe that high CO2 is very beneficial for extreeme dives.

I agree with you about CO2 being beneficial. Question is, does it always has to be accompanied by contractions at depth? I often wondered if really deep divers get contractions before getting back around to residual volume area. Assumed they don't. Can anyone comment?

Originally Posted by cebaztian

2) It might just be that the PACKING is the main culprit, actually inhibiting bloodshift and therefore the blood comes from the lung as FERNET implies.
But packing is what takes me from 60-70 meters.

You can try finding something else to take you there. Much much easier said than done, ofcourse. For example: Eric F's calculations on his own mouthfill gets him much deeper equalization-wise, and hypoxic limits can be changed.

Originally Posted by cebaztian

3) Or can ALL symptoms of squeeze (during a dive with packing) be avoid if you descent slow from 0-15. The question is how slow would this be? 2 m/s ?

I remember there were some graphed dives of Martin/Herbert/Carlos somewhere over the net. Might be a valueable reference, though they might have a different level of adaptation than "shallower" divers.

Originally Posted by cebaztian

But the chest area is not exposed to vasoconstriction, is it?

http://en.wikipedia.org/wiki/Hypoxic...soconstriction