No, I don't believe any nurse is going to receive self-defense from a facility. Having said that, there is an upside. If you are not trained by the staff, you cannot be held accountable to how you might react if threatened/attacked. For example, most law enforcement agencies forbid choke holds, overwhelmingly the single most effective way to STOP someone who might be attacking you.
Choke holds are relatively easy to learn, effective, and not too difficult to apply. Check out a good martial arts school nearby, I would recommend Krav Maga, this Isreali self defense course specializes in helping those who are unaccustomed to even consider violence to counteract violence.
BTW, nurses in general are treated more favorably and you are less likely to be attacked than say an officer. But, never say never. And if the attack comes, you would likely NEVER see it coming. Violent criminals are not in the business of fighting fair. If they decide to go for the kill, they will take every advantage, including diversion.
Goodness, didn't mean to sound too negative.

I do work in corrections and really enjoy the challenges, the autonomy. But, I am very cognizent of the dangers each and every day...
Some advice, always ensure there is an officer nearby. Their mere presence should deter any nasty thought some nerdowell might entertain...
Mark
