I'm a writer currently writing a novel that partly centers around the Crisis Triage Unit of a psychiatric hospital. While artistic license is a given, I would also like to be as accurate as possible.

I'm interested to know:

1. When and how a PET responds to a psychiatric emergency.

2. The basic procedures for involuntary admittance to a crisis unit.

3. The steps a doctor goes through when first examining a potentially dangerous and/or hostile patient.

4. The role of a psychiatric nurse, including limitations of that role.

I'd also like to know if there's a specific drug that can imediately cause someone to act irrationally and possibly violent.

If there is anyone here who can give me some insight into these questions I would greatly appreciate your input here or, if you prefer, via private post.

Thank you.