Dr Deco
Contributor
- Messages
- 2,384
- Reaction score
- 96
- # of dives
- I just don't log dives
Dear readers:
Just a couple of more words on deserved and undeserved hits - - I doubt that it is linked directly to the use of dive computers.
This designation of "culpability" is a concept linked to the Haldane idea of the metastable state that implies that gas bubbles will not form if you are under that limit. At the time that Haldane made those tables, it was already known (by the German chemist Wilhelm Ostwald) that impurities greatly affect this so-called metastable limit.
We have very good evidence today that impurities in the form of microbubbles (the tissue gas micronuclei) are always present in the divers body. Thus, the limits set by the tables are only a part of the story. They are limits when considering a certain population of tissue micronuclei. If that population is bigger than normal, then DCS can result upon decompression.
The population of microbubbles is shifted when one forms them in their body. The formation processes, as stated before, are strenuous activity especially heavy physical activity such as lifting, climbing ladders, etc.
Avoid these to help avoid the underserved hits.:yelling:
Dr Deco :doctor:
For those of you who are interested, this is a reminder of the
[red]Decompression Physiology [/red]
class I have at the Catalina Island station.For more information, connect on: http://wrigley.usc.edu/hyperbaric/advdeco.htm
Just a couple of more words on deserved and undeserved hits - - I doubt that it is linked directly to the use of dive computers.
This designation of "culpability" is a concept linked to the Haldane idea of the metastable state that implies that gas bubbles will not form if you are under that limit. At the time that Haldane made those tables, it was already known (by the German chemist Wilhelm Ostwald) that impurities greatly affect this so-called metastable limit.
We have very good evidence today that impurities in the form of microbubbles (the tissue gas micronuclei) are always present in the divers body. Thus, the limits set by the tables are only a part of the story. They are limits when considering a certain population of tissue micronuclei. If that population is bigger than normal, then DCS can result upon decompression.
The population of microbubbles is shifted when one forms them in their body. The formation processes, as stated before, are strenuous activity especially heavy physical activity such as lifting, climbing ladders, etc.
Avoid these to help avoid the underserved hits.:yelling:
Dr Deco :doctor:
For those of you who are interested, this is a reminder of the
[red]Decompression Physiology [/red]
class I have at the Catalina Island station.For more information, connect on: http://wrigley.usc.edu/hyperbaric/advdeco.htm
