I have had the opposite experience to this. I have a disabled son with a history of heart & chest problems. When ill he has a tendency to drop to very low sats (80ish) at night. At this point we call an ambo as we have no car and live several miles from the hospital (but 50 yards from the ambulance station although they always have to phone for directions). Invariably by the time the ambo gets here the boy has woken up and his sats recover. This is usually the cue for a grumpy ambulanceman. This last happened on Tuesday night. The RRU bloke was most iunimpressed but I did have chat about this site with the paramedic from the van. Boy has just been released from hospital after an emergency addenotonsilectomy and a stay in ICU. We might be paranoid parents but we're not always wrong :-) Cheers Mark