For this type patient, you need to know crisis prevention & intervention (aka self defense for psych nurses), you need to be able to medicate with PRN and/or stat meds, over objection if necessary, and you need to be able to use seclusion and/or restraints. Violent psychiatric patients are not to be taken lightly, you can get very seriously hurt. Not telling you to leave, but I would, pregnant or not. Your facility is not prepared for this level of agitation/aggression.