Have the surgery, don't have it. If you are hung up on what they don't have to tell you, probes to monitor you, being exposed, along with being demanding and pissing off those who you are putting the hands of your very life in, deal with it. Grow up and be a mature adult about it. Take off all your street clothes, put the gown on, follow all the directions the medical professionals give you. You are not there to put on a fashion show in the OR. They are cutting on your body to fix something. They are not there to ogle your body. They have many more important things to deal with and attend to regarding you making it through the surgery without any complications and if any complications take place, they are there to do all they can to reverse them the best they can. Don't take yourself so seriously on these pidly, insignificant, pointless issues. By the way, when talking to medical professionals, tact, understanding, respect, gratitude and not being an arse towards them generally most often DOES make a positive difference.
On a lighter note... There are more important pressing matters to worry about such as "Winnie the Pooh doesn't know what to do, he's got a honey jar stuck on his nose... Help me if you can, I've got to get back to Pooh corner by 1:00, you'd be surprised there's so much to be done... Count all the bees in the hive... Back to the days of Christopher Robin and Pooh..." Kenny Loggins, Return To Pooh Corner