Thanks for your answers. There must be more than 1 of you out there who is a proponent of keeping them? So far more in favour of dumping Boyle's machines out of A&E. I would be sorry to lose them, but really only because I like having the option of giving someone >50% N2O prior to a painful L.A. injection, or combined with midaz / morph for reductions etc. I dread to think what the cost of "safe" replacements would be and remain to be convinced whether the occasional use by a senior doc to provide >50% N2O is justified. We have oxylogs which see far more use. In 9 years, I've never seen a Boyles' machine used in A&E for something that couldn't have been done at least as safely some other way. Problem is, if I even suggest to the managers that we don't need replacements, all they'll do is stick another bed in the vacated space! (Cynic - moi?) Goat Dr G Ray A&E Sussex Reply to [log in to unmask]