Factors associated with late presentation to the emergency department in patients complaining of chest pain.

Abstract Objective We investigated which factors predict late presentation (LP) to the emergency department (ED) in patients with non-traumatic chest pain (CP). Methods All CP cases attended at a single ED (2008–2017) were included. LP was considered if time from CP onset to ED arrival was >6 h. We analyzed associations between 42 patient/CP-related characteristics and LP in the whole cohort and in patients with CP due to acute coronary syndrome (ACS). Results The cohort included 25,693 cases (LP=50.6%; ACS=19.0%). Twenty factors were associated with LP, and 8 were also found in patients with ACS: CP of short-duration, aggravated by exertion or breathing/movement, undulating or recurrent CP increased the risk of LP, whereas CP accompanied by diaphoresis, irradiated to the throat, and chronic treatment with nitrates decreased the risk of LP. Exertional and recurrent CP were associated with both, LP and ACS. Conclusion Some characteristics, mainly CP-related, may lead to LP to the ED. CP aggravated by exercise and recurrent CP were associated with both LP and a final diagnosis of ACS. Practice implications Patient educational initiatives should consider these two features as potential warnings for ACS and thereby encourage patients to seek early medical consultation.