If you're worried that you wont be asleep during the surgery, there is something that anesthesiologists and anesthetists use to make sure you're asleep. It's called a BIS Monitor. It measures your brainwaves and the person doing the anesthesia can tell if you're asleep, how deeply you're asleep and when you're going to wake up.

I dont know about any of the risks of anesthesia that we MSers would have. Sorry that I cant answer that question.

My dad is a nurse anesthetist and is the one who told me about the BIS Monitors. (I have an anesthesia phobia) My dad knows that if I ever have to have surgery, he's to tell the person doing the anesthesia needs to use a BIS Monitor so that I'm not awake during any surgery I may happen to have.