the way CPR works with CO2 from our lungs to their lungs

Question

if giving CPR orally, how does the CO2 from our lungs affect theirs if they need oxygen? Like, don’t they need oxygen in their lungs to go into their bloodstream to reach their brain? If were taking a deep breath of oxygen, our lungs immediately convert it to CO2, a waste product, however during oral CPR we instead breath that into the mouth and lungs of the recipient.

In: Biology

Answer 1

The air you breathe in is 78% nitrogen, 21% oxygen, and 1% other stuff. The air you breathe out is 78% nitrogen, 16% oxygen, 5% CO2, and 1% other stuff. These numbers are approximate, but you get the idea. There’s plenty of oxygen.