Ah, don't worry! It's rarely as dramatic as they show in the movies. [Keyword: rarely]

By work I mean much more mundane things- cleaning things out, doing laundry, running tests, filling out paperwork, checking and gathering supplies...and more. We don't have nearly the level of staff a hospital usually has, so you end up having to do all the work that'd be delegated to nurses, janitors and specialists on top of seeing patients.

So...I'm afraid your brother hardly got a glamorous augment. Though it is important!