I just spoke to Brian between his wave of other phone calls. Nat did some actual walking today. This is the longest he'd walked since he walked into the hospital. He walked down the hall to the elevator then to his favorite statue/toy in the lobby which is a giant beanstalk that reaches all the way to the ceiling.
The stent was inserted yesterday and now Nat's exhibiting elevated liver function. They ran a bunch of tests to make sure he didn't pick up anything nasty like mono, but they've decided after all the results came back negative that it's probably just a reaction to the anestetic used.
Mom and Dad go down there tomorrow, so I should be able to have better updates.