Table 1 Components of HEART2 scoring system

History

Slightly suspicious

0

Moderately suspicious

1

Highly suspicious

2

EKG

Normal

0

Non-specific repolarization disturbance

1

Significant ST deviation

2

Age

 < 45

0

45–64

1

 ≥ 65

2

Risk factors

No known risk factors

0

1–2 risk factors

1

 ≥ 3 risk factors or history of atherosclerotic disease

2

Troponin

 ≤ normal limit

0

1–3 × normal limit

1

 ≥ 3 × normal limit

2

Testing

Previous negative cardiac imaging test findings within 2 years

 − 1

Previous negative cardiac image test beyond 2 years

0

Previous positive cardiac imaging test findings

1