Validation of Two Decision Rules for Predicting Risk for Acute Myocardial Infarction

Researchers evaluated the Manchester Acute Coronary Syndromes (MACS) and troponin-only MACS (T-MACS) rules in a secondary analysis of data for 1244 patients who presented to two emergency departments (EDs) in New Zealand and Australia with a complaint of at least 5 minutes of chest pain concerning for acute coronary syndrome (ACS). MACS and T-MACS probabilities for ACS were calculated …