Evidence for oxygen renewal during hands-only CPR
I have heard on several occasions anecdotally (e.g. [1]) that hands-only CPR can replace the air in the lungs with new air (with more oxygen) due to the mechanical compression of the rib cage. This makes sense to me, but I have been unable to find any mentions of studies, which somewhat surprises me, as I would expect it to be relatively easy to at least some basic level of tests, for example by filling a CPR doll's "lungs" with a different gas and something to measure oxygen. Is anyone aware of studies?
[1] www.quora.com/How-can-hands-only-CPR-work-if-you-arent-introducing-new-oxygen-into-the-system
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