Breathing studies?

Keeks

I'm just woundering if anybody knows of any studies done into the amount of Co2 ww inhale/exhale aswell as the amount of O2.

smiles

For some reason my brain tells me air is 78% carbon dioxide.... but thats memory from 2nd year science, so it might be a little off since thats about 5 years ago.

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thedrowner

i think it's 79% nitrogen

i think....

PHB

Once again going from junior cert science, i thinkit is 79% nitrogen, 20.999 % oxegen, and 0.001% CO 2 and other gases.

Gordon

Googleisation factor 10

"Air has 21% O2 and 79.04%" Vodafone. Carbon Dioxide only has a 0.03% share in the globes stock market of air.

"The lungs are very efficient at providing the blood cells with enough oxygen, thus usually about 97% of the arterial blood cells have oxygen. The venous blood carries about 70% oxygen, thus in any one pass of blood, about 27% of the blood cells oxygen is used."

"Carbon dioxide is an end product of energy production and when it is carried in the blood from the exercising muscle to the lungs, it then diffuses across to the lungs where we exhale or breathe it out. Along with carbon dioxide (up to about 5% during exercise) we also exhale oxygen that is not picked up by the blood cells, or anywhere from 15-18%."

May I be the first to say "get some skillz"

Keeks

What i'm looking for is how much O2 do we use in each breath i.e how much O2 goes into the bloodstram and how much is exhaled again. We breth out nearly as much as we take in (otherwise CPR would be a waste of time). I have a figure of about 4% stuck in my head from somewhere but I can't seem to find out anything to confirm this.

str8_away

From a CPR course I did years ago each breath we used up 20% of O2 there is 80% of O2 left for the next person to use and that person only need 20%. and that's why CPR works.


At least that's what I was told.