[rusk]

Well that's how CPR works ... I can't remember the details ... it's many many years ago I studied first aid but I think it's something like 1/3 of the Oxegen gets used, so when you're giving the kiss of life you're imparting the remaining 2/3

[rocqua]

I thought that CPR was largely about getting CO2 into the lungs to trigger a breath reflex.

[rusk]

It could well be. I’m just recalling something an instructor taught me about 25 years ago ...