emergency & critical carescoring tool

HEART Score

The HEART Score estimates short-term (6-week) risk of major adverse cardiac events (MACE) in patients presenting with chest pain. It uses five elements: History, ECG, Age, Risk factors, and Troponin.

inputs

Nature of chest pain, pattern, and associated features
HTN, DM, hyperlipidaemia, smoking, obesity, family history of CAD

✓ when to use

Use in adult patients presenting to the ED with chest pain or symptoms suggestive of ACS where the diagnosis is not immediately clear. Particularly valuable for identifying low-risk patients (score 0–3) who may be safely discharged with outpatient follow-up, reducing unnecessary admissions and investigations.

✗ when not to use

Not intended for patients with clear STEMI (proceed directly to reperfusion pathway). Not a substitute for clinical judgement in atypical presentations. The 'History' component is subjective and has moderate inter-rater reliability. Not validated in patients under 21 or for non-cardiac chest pain triage.

clinical pearls

  • The HEART score's power is in identifying low-risk patients for safe early discharge. A score of 0–3 with negative serial troponins has a MACE rate well under 2% — these patients do not need admission.
  • The 'History' component is the most subjective element. Highly suspicious = typical anginal pain (substernal, exertional, relieved by rest/GTN). Slightly suspicious = clearly non-cardiac features. Moderately suspicious = everything in between.
  • The troponin component should be interpreted relative to the assay used. With high-sensitivity troponin (hs-cTn), the threshold for '1–3× normal' is much lower in absolute terms than with conventional assays. Know your lab's 99th percentile.
  • HEART performs better than TIMI for identifying low-risk patients (higher sensitivity) and is simpler to calculate. TIMI and GRACE remain useful for risk-stratifying moderate-to-high risk patients for invasive strategy decisions.
  • A HEART score of exactly 4 is the most clinically challenging group — these patients need individualized assessment and often benefit from observation with serial troponins rather than reflexive admission or discharge.

related tools

timi-ua-nstemiAlternative ACS risk score — better for moderate/high risk stratificationwells-peIf PE suspected rather than ACS