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Thread: Study claims 100% o2 is harmful

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  1. #1
    Registered Users scuba smurf's Avatar
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    very interesting, thank you for sharing.

    smurf

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    Photo & Videographer Papa Bear's Avatar
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    They have also noticed changes in cells exposed to 100% O2 that is not healthy to the heart. Many years ago we had a near drowning on a beach dive. We pulled the diver from the surf and had him stabilized and breathing on the beach. The Life Guards arrived and administered 100% O2 and he freaked out and went nuts like a seizure! I always felt that they flushed out the CO2 in his system which took away his breathing reflex triggered by CO2. The idea the the brain triggers the sudden rush of adrenaline to help the body try to breath was always my theory! That was 1974! Glad to see we are always looking at the "Tried and true" methods, you never know what might really make a difference! We used to believe "Bleeding" was the best way to get the "Bad Blood" out! Never stop learning!

    There was an article about death on a cellular level that basically stated that death is a slow process and that many cells in our bodies live for a long time in our bodies like hibernation. It spoke of O2 waking them up and them dying at a faster rate! If I find it again I will post a link!
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    Registered Users hbh2oguard's Avatar
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    I knew that 100% O2 is bad for extended periods of time but after reading that I guess it's bad all together. It still feels great, ever if it's "bad" but there are always much worse things we can do for our body. Now I wonder how long it will take before CO2 is going to be mixed into medical O2 tanks.

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    Master of Mask Mold seasnake's Avatar
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    Very interesting. What are the implications then where you would normally use 100% as a deco gas? (This is where somebody smart is supposed to chime in)

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    Cave Diver BamaCaveDiver's Avatar
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    Quote Originally Posted by seasnake View Post
    Very interesting. What are the implications then where you would normally use 100% as a deco gas? (This is where somebody smart is supposed to chime in)
    You are looking at a totally different scenario there snake, since your body is already pre-loaded with CO2, and you are still being subjected to increased presuure (a little still goes a long way thing.)

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    If we are talking ambient air then less than .005% CO2 in the human exhale we are looking at 1.9% plus our minus depending on load! Not MUCH!
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  7. #7
    Registered Users hbh2oguard's Avatar
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    I was thinking about it, and for the medical there is a very simple fix. Stop using non-rebreater masks (the kind with the resivor bag) and start using rebreater masks which give the patient about 95%O2 instead of the 99-100% with the non-rebreater masks.

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