Prospective external validation of an accelerated ... - Semantic Scholar
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Kelly and Klim International Journal of Emergency Medicine 2014, 7:42 http://www.intjem.com/content/7/1/42
ORIGINAL RESEARCH
Open Access
Prospective external validation of an accelerated (2-h) acute coronary syndrome rule-out process using a contemporary troponin assay Anne-Maree Kelly1,2* and Sharon Klim1
Abstract Background: Recently there have been efforts to derive safe, efficient processes to rule out acute coronary syndrome (ACS) in emergency department (ED) chest pain patients. We aimed to prospectively validate an ACS assessment pathway (the 2-Hour Accelerated Diagnostic Protocol to Assess Patients with Chest Pain Symptoms Using Contemporary Troponins as the Only Biomarker (ADAPT) pathway) under pragmatic ED working conditions. Methods: This prospective cohort study included patients with atraumatic chest pain in whom ACS was suspected but who did not have clear evidence of ischaemia on ECG. Thrombolysis in myocardial infarction (TIMI) score and troponin (TnI Ultra) were measured at ED presentation, 2 h later and according to current national recommendations. The primary outcome of interest was the occurrence of major adverse cardiac events (MACE) including prevalent myocardial infarction (MI) at 30 days in the group who had a TIMI score of 0 and had presentation and 2-h TnI assays