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Table 1 Composition of the HEART score for patients in the ED with possible ACS

From: The HEART score in predicting major adverse cardiac events in patients presenting to the emergency department with possible acute coronary syndrome: protocol for a systematic review and meta-analysis

History Highly suspicious 2
Moderately suspicious 1
Slightly suspicious 0
ECG Significant ST depression 2
Non-specific repolarisation disturbance 1
Normal 0
Age ≥ 65 years 2
45–65 years 1
< 45 years 0
Risk factors* ≥ 3 risk factors 2
1 or 2 risk factors 1
No risk factors 0
Troponin ≥ 3× normal limit 2
1–3× normal limit 1
≤ normal limit 0
  Total
  1. *Risk factors for coronary artery disease include currently treated diabetes mellitus, current or recent (< 1 month) smoker, diagnosed hypertension, diagnosed hypercholesterolaemia, family history of coronary artery disease, and obesity