BACKGROUND: Peritraumatic dissociation is a reaction that occurs in the moment someone is exposed to a threatening situation and has shown to be an important predictor of long term psychological disorder, including post traumatic stress disorder. OBJECTIVES: To make the psychometric adaptation of Peritraumatic Dissociation Experiences Questionnaire in Portuguese ambulance personnel that report high exposure to trauma. The instrument has been widely used in research, and was initially designed to analyse peritraumatic dissociation in emergency personnel. METHODS: After items translation and study, 170 ambulance personnel filled it, and a PTSD scale. RESULTS: Data show that the instrument has good internal consistency (Cronbach alfa = 0.87) and construct validity, suggesting that it is appropriate to evaluate the reaction of emergency workers during the duties of their professions. It also has a high correlation with post traumatic stress disorder symptoms, suggesting a good convergent validity. DISCUSSION: Peritraumatic dissociation is a good predictor of PTSD. Taking this into account, the availability of this instrument in Portuguese, with good psychometric characteristics, can help in the identification of the persons who will develop symptoms after a traumatic experience.
Instrumental study; peri traumatic dissociation; ambulance personnel; PTSD
