Why is it ok to breathe it yourself for 6 hours of labour x 4 but not to be a midwife standing nearby who might inhale some gradually over a 20 year career? Are those amounts really more than someone actively using it over a numbe rof childbirths, as I did. I don't really anyone suggesting, by birth 4, that I had had enough and shouldn't have anymore, even though the last 2 were actually at the hospital that has now apparently withdrawn it and offered the comb!
Are people involved in accidents now also not given it by paramedics at the roadside where it even more directly can escape into the atmosphere?
I though the health effects were similar to huffing NOS that the youthbwent through a phase of doin, it out competes oxygen so can cause breathing difficulties and oxygen starvation, hence why they add oxygen to it in hospitals to form entonox. What are the long term risks to staff? What about operating theatre staff, I have had 2 colonoscopies and used gas and air each time, nobody seemed concerned.