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In: Biology
If one person’s lungs stop inhaling, they have 0% oxygen in their lungs. Normal atmosphere is made up of around 20% oxygen. Human exhales still have 15% oxygen in them. By forcing our 15% exhale into the non breathing person’s lungs, their lungs have a chance to absorb the oxygen and exhale the co2 in their lungs. Any breath is better than no breath since your brain and organs continue to use the oxygen in your bloodstream.
When emergency services arrive, they usually attach 100% oxygen to a mechanical breathing device to continue to oxygenate the victim’s blood.
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