agree with infidel, shadowing cannot be stressed enough. I have a coworker who quit anesthesia school 9 months into it, her reason was she did not really know what was invovled and didnt like the responsibility

(this is the reason she gave, and i have no other reason to believe it not to be true) but why in the world would a school admit someone who has no idea what the career invovles they are choosing to pursue. what a waste of time, and someone else they could have admitted who knows what the career invovles.
anyways, shadow several shifts. see a variety of cases. besides the interview commitee i find are impressed with people who go out of their way to shadow and shadow enough to see what the job entails.
tony