Table 1

HEART score

History	Highly suspicious	2
	Moderately suspicious	1
	Slightly suspicious	0
ECG	Significant ST depression*	2
	Non-specific repolarisation disturbance/LBBB/PM	1
	Normal	0
Age	≥65 years	2
	45–65 years	1
	≤45 years	0
Risk factors	≥3 risk factors† or history of atherosclerotic disease	2
	1 or 2 risk factors	1
	No risk factors known	0
Troponin	≥3× normal limit	2
	1–3× normal limit	1
	≤normal limit	0

*ST segment depression=0.05 mV in two or more contiguous leads, in the appropriate clinical context or (2) ST depression of >0.1 mV.8
†Hypercholesterolaemia, hypertension, diabetes mellitus, cigarette smoking, positive family history, obesity.
LBBB, left bundle branch block; PM, pacemaker rhythm.