Quote: (Originally Posted by
Abbo)
I don't know references, but it seems to make sense that the Co2 makes carbonic acid and the resulting acidity dilates the arteries that increases the oxygen dose?
That carbonic acid-induced vasodilation is why a little bit of CO2 in your loop during decompression should theoretically speed nitrogen off gassing, as well. But not sure how much empirical evidence there is with respect to this phenomenon.