When my 15 month old had a GA, he had a cannula in place first, then they used the gas which made him gag and go purple, at which point I was rushed out the room and he was intubated. I spent the whole time panicing that he was dying but apparently his was a common reaction, so please don't panic if it happens. Boytwin bounced back very quickly after his GA and his grommets have caused him no problems.