Sylvia, I had my ablations done at the Mayo clinic. I think I posted about them to you before. i had no sedation whatsoever, but that was because we knew my arrhythmias were going to be difficult to track down and we didn't want any drugs to scare them away. However, my understanding is normally, they do use a twilight and only use general if some sort of problem develops. In fact, they had me sign a permission form for general "just in case". In all honesty, he'll be more comfortable if they are going to knock him out. It is very hard to lie that still all day.
They place all of their patients on full strength aspirin afterwards for 3 months, but I can't take aspirin, so they did put me on coumadin, I want to say for 3 months, but now that I think about it, that can't be right because I went back for my second ablation in 3 months and I wasn't on it. Maybe my local cardio told me to get off of it because it thought it was silly anyway.
One of my ablations lasted 7 hours and the other 8, but again, that's because what they were searching for was difficult to find. I wouldn't think his would be anywhere near that long, but definitely longer than you were thinking. Plus, just the set up for all of that takes at least an hour+ before they can even get started and if they are doing an MRI before, that will be another hour, so just be prepared to wait, but know that they aren't doing stuff to him for alot of that time. I had caths on both sides as well as my neck.
I know it's scary for you to think about going through all this again, but I promise you, it is nothing compared to heart surgery. Really, it isn't. He'll be fine. I'm very hopeful that they find the spot that needs to be ablated and he can finally get some relief. Good luck!
#1 OHS 1980 Wolfe Parkinson White, Duke, Dr Sealy.
#2 4/08 Tricuspid Replacement (31mm St. Judes Biocor), ASD closure with Bovine Patch, modified right sided Maze Procedure, Mayo clinic