Prediction of Violent Behaviour in Psychiatryc Emergency Room

The highest incidence of workplace violence occurs in psychiatric wards, emergency departments (EDs), waiting rooms, and geriatric units (). The aim was to identify risk and protective factors of violent behaviours and to establish the criterion to which the HCR-20 predicts the verbal, physical and property violence. This is a prospective cohort study including 217 patients. Psychiatric evaluation to patients admited in emergency ward of psychiatric hospital at UHC Mother Tereza over the period 2011 2014, was done based on structural clinical interviews and questionnaires related to violent behaviors and risk factors. HCR scoring criterion for the classification of patients in violent and non-violent is greater than 21 for verbal violence and property (fig.2) and greater than 27 for physical violence (fig.3). It was found that the sensitivity of each curve of the type of violence to classify patients in violent and non-violent is very high, greater than85 %. The successful management of violence is predicated on an understanding of its dynamics.