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Thread: Study claims 100% o2 is harmful

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  1. #1
    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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    Photo & Videographer Papa Bear's Avatar
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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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    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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    Photo & Videographer Papa Bear's Avatar
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    I just re-certified my O2 Administrator and we were taught to use re-breather mask from the start! This might be the new thinking!
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    Registered Users hbh2oguard's Avatar
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    Well I guess that's good to hear, I just went through an EMT recert and all that most medical agencies (medics, lifeguards, even police who were in the class) used were either non-rebreater or on very rare occasions nasal canuals. I know that's all we carry on our trucks where I work, but maybe with time rebreaters will become move avaible.

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    Registered Users nat's Avatar
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    As a Midwife, this thread is very interesting from my point of view within a clinical setting. We routinely respond to compromised patients by, amongst other interventions, providing 100% O2 for up to and beyond 4 hrs.

    This is often initiated by the Midwife whilst awaiting medical personnel to attend in the case of an emergency. Although it's not often realistically carried out, O2 is classed as a drug and should be prescribed by a Doctor.

    I wonder what implications this will have in clinical practice as well as the impact these findings will have outside of a hospital... I'll have to keep my ear to the ground on this subject!

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