Understanding the psychological impacts of responding to a terrorist incident.

Background: Responding to a mass casualty event can cause significant distress, even for highly trained medical and emergency services personnel. Objective: The purpose of the study was to understand more about first responders' perspectives about their participation in major incident responses, specifically how and which individual and system factors contributed to their preparedness or may have enabled or hindered their response. The aim of the work was to improve preparedness and response for future incidents. Methods: This study reports a detailed analysis of qualitative interview data from frontline staff who responded to a large mass casualty terrorist incident in the UK in 2017. Data highlighted the psychological distress caused by responding to terrorist events and thus became the focus of further, detailed analysis. Results: Participants ( Conclusions: This research contributes to the literature the voices of first responders to UK terrorist incidents, building on existing findings while further contributing unique contextual perspectives. This research reinforces the importance of psychosocial support for those who respond to these tragic incidents, and offers a number of recommendations for organizational preparedness for future events. Abbreviations: A&E: Accident and Emergency; EPRR: Emergency Preparedness, Resilience and Response; ERD: Emergency Response Department; HEPE: Health Emergency Preparedness Exercise; PHE: Public Health England; PHE REGG: Public Health England Research Ethics and Governance Group; MCI: Mass Casualty Incident; NHS: National Health Service.