What is the accuracy of the study? The study's purpose was to delve into clinicians' perceptions of facilitators and barriers to using the IMPACT protocol, a significant tool introduced in an Australian hospital Emergency Department (ED) to enhance the risk stratification of patients presenting with chest pain. The study aimed to pinpoint the factors that influence clinicians' behavior in managing chest pain patients and delve into how these factors relate to implementing the IMPACT protocol. The sample was obtained through semi-structured interviews with nine ED clinical staff, including both medical and nursing professionals, conducted in 2016. Inclusion criteria for participation likely involved clinical staff (both medical and nursing) working in the ED of the hospital where the IMPACT protocol was implemented. Exclusion criteria may have included staff not directly involved in managing chest pain patients or those unfamiliar with the IMPACT protocol. The participants who contributed data to the study were ED clinical staff, both medical and nursing, directly involved in managing chest pain patients. The demographic or clinical profile of the participants is not specified in the provided information, nor is the dropout rate. Data collection methods involved semi-structured interviews guided by the theoretical domains framework. Two researchers conducted