I had something similar. Earlier this month I had heart surgery (angioplasty) and had a couple of stents put in. It's really fascinating in what they do. They run a wire from your femeral arteory into your heart check out the major arteories and then if necessary put in stents. You are awake during it, however you are under sedation.
They keep you in the hospital over night mostly because they need to make sure the incision in your femeral arteory has healed enough, and to get rid of the sedative. And it is the sedative that caused me to post.
For the full night and next day I was in the hospital I was even more of a babbling idiot than I am here. I listened to what I was saying out loud, yet knew I was making no sense. At first I thought I was having a stroke. It was the same the next day after I got home. It wasn't until almost 3 days after the procedure before I could string together 2 cogent sentences in a row.
It was very disconcerting to feel that out of control because of the drugs. I was especially disappointing since I didn't even get to be high.
. Now I've had a few of these procedures over the years, but this was the first one where this happened. So whatever they used, I don't want it again. It only goes to show you just how some drugs can really destroy your cognitive processes, and you can be aware of it and yet totally helpless to do anything about it until it wears off.