[Comment] Faster troponin, same time in the emergency department: what is next for acute coronary syndrome assessment?

Emergency department overcrowding and access block are now among the most consequential patient-safety problems facing acute hospitals globally.1 The associated harm is measurable, dose-dependent, and has no clearly safe threshold beyond approximately 5 h.2 Patients presenting with possible myocardial infarction constitute a large and possibly modifiable share of the emergency department burden. Chest pain is the second most common reason for adult emergency department attendance in the USA, acc