You mention the "time out" before sedation is administered, which is great. But, the last time I had a procedure, we went through a bunch of stuff before I went into the operating theater, with my wife present and verifying everything that was going on. Then I was moved into an operating theater and asked by someone I had never met before to sign a paper about some sort of sedation, which I could opt out of. Without my wife present to "double check my math".
At this point, I hadn't had anything to eat in 24 hours, nothing to drink in 12, and had gotten little if any sleep in the previous 24+ hours because of the operation preparation... To recap: I was sleep deprived, dehydrated, and my blood sugar was all messed up, and had to make a decision that was so important that it required signing off on a page of dense text.
In retrospect, I should have said that I wasn't able to make that decision and lobbed the ball back into their court. What I did was the doctor said he recommended it, and I signed it.
In second retrospect, if at all possible, I'm never going to "meet" a doctor in the operating room. Apparently I had the opportunity to have a sit-down in their office, but this was presented to me as a waste of time. Never again...