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In: Biology
You are initiating a response or trying to induce natural involuntary movements the brain does to keep us alive. Breath initiates heart and then pumps oxygen to the brain. It’s the brain that matters. It’s cumulative it’s easiest to start breathing. Or shock the heart . Heart is powe switchr, air is wires. Brain is a light bulb
We are closer to 0% efficient than we are to 100% efficient at exchanging gas in our lungs. This is why blowing in a fire still feeds it, and we can’t just blow out fires with our breath
Like my gran pappy always said “somethin is better than nuthin unlees we talking about STDs”
As people have said, there is oxygen exhaled.
The RCUK 2010 guidelines shifted from 15:2 to 30:2 as the first ten compressions were found to be less effective as the pressure builds up over those.
Lay responders were less keen to do mouth to mouth, so there was a push to support compression only. I think that was part of the 2015 update. The 2020 changes recommended no mouth to mouth and a face covering.
Mouth to mouth is in scope again, but there is lower appetite for it as compression only works.
All that said, in all the resus attempts I’ve done I have had equipment with me so I’ve always gone straight to BVM.
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