All surgery has inherent risk, but if you've done your homework and have a good surgeon, you should be fine.
About 15 years ago, I had a major operation. I had a lot of faith in my doctor, but I think I was too stupid to truly realize how serious it was. They actually sent a priest to my room the night before the operation to speak with me. I am not a religious person, and I told him I had nothing to talk about. They sent a priest, for crying out loud! I guess I should have been worried, but I don't know, I just tried not to really think about it.
Like the others have said, you won't know anything about it. I think I got to 97 counting backwards. Next thing I knew, I was awakening in the recovery room, and the first thing I said to the nurse was "Phlegm". Laying on my back for 7 hours just gave me a major phlegmy backup and I had to spit. The next thing I said to her in my drug induced stupor was "You're cute". Then I think I feel asleep again for another 8 hours or so.
Since most surgery is incredibly invasive, expect to be in some pain for awhile. I had some marvelous painkillers those first few days, which made all those visits from my relatives and friends more tolerable. You really can't do much, and you have tubes coming in and out all over you, but you have to lie there and let them gawk at you. And they always come and visit on the first few days when you look and feel your worst. A few days later when I had most of the tubes out and felt better, did anyone come? No, of course not.
