I recently had a dream where I was the surgeon instead of the one on the table. I stood to the unknown patient's right, by their shoulder. The OR was a bright orange room with large circular windows that looked out into a postmodern half-dystopian cityscape which kept moving up and down because apparently we were moving down and up, like a giant elevator.

Also I showed these dreams last night to a friend of mine who has had heart surgery (not open), and she kind of freaked out over the 'incision into my chest' imagery.