My son had to have surgery at 10 months, and I was also terrified!
One thing his doctor told me was that he (the doctor) only worked with pediatric anesthisiologists, and that they are very, very good at what they do. Statistically, he told us that our son was safer with a pediatric anesthesiologist that any adult having surgery would be.
Our son had his surgery at an excellent children's hospital, but it's no
Johns Hopkins! As scared as you are right now, I hope you can take comfort in the fact that your son will be at one of the BEST hospitals in the country. He will be in excellent hands!!!
After the surgery was over, the worst part for me was my son waking up. He was a little upset at first, and it wasn't too long before he was screaming and could not be comforted. I've been told that's not too uncommon ... It's just how some people respond to anesthesia. Try telling that to the mom on a 10 month old. I was practically hysterical because nothing I did was helping. Fortunately that didn't last forever. The nurse gave him some pain melds, and he managed to go to sleep.
It stinks, and it really is scary for the parents. Remember, this is going to be so much harder on you than it is on him! And he's not going to remember a thing :-)