Calculate the GRACE score for acute coronary syndrome risk stratification including in-hospital and 6-month mortality prediction.
The GRACE (Global Registry of Acute Coronary Events) score is one of the most extensively validated risk stratification tools for patients presenting with acute coronary syndromes (ACS), including ST-elevation myocardial infarction (STEMI), non-ST-elevation myocardial infarction (NSTEMI), and unstable angina. Developed from a multinational registry of over 40,000 patients, the GRACE score predicts both in-hospital and 6-month mortality with excellent discriminative ability (C-statistic > 0.80).
The score integrates eight readily available clinical variables: age, heart rate, systolic blood pressure, serum creatinine, Killip class, cardiac arrest at presentation, ST-segment deviation, and elevated cardiac biomarkers. These variables capture the key pathophysiologic determinants of ACS outcomes including myocardial injury severity, hemodynamic status, renal function, and heart failure.
European Society of Cardiology (ESC) guidelines recommend GRACE scoring for all ACS patients to guide the timing and strategy of coronary intervention. Patients with GRACE scores > 140 are classified as high risk and benefit from early invasive strategies with coronary angiography within 24 hours.
The GRACE score provides objective, evidence-based risk stratification for ACS patients, helping clinicians determine optimal treatment timing and strategy. It is recommended by ESC guidelines and has been validated in diverse international populations. Keep these notes focused on your operational context. Tie the context to the calculator’s intended domain. Use this clarification to avoid ambiguous interpretation.
GRACE Score = Sum of age points (0–100) + heart rate points (0–46) + systolic BP points (0–58) + creatinine points (1–28) + Killip class points (0–59) + cardiac arrest points (0 or 39) + ST deviation points (0 or 28) + elevated enzymes points (0 or 14). Total range: 1–372.
Result: GRACE Score 107 — Low Risk
A 65-year-old with HR 85, SBP 130, creatinine 1.1, Killip I, no cardiac arrest or ST deviation, but elevated enzymes scores 107, placing them in the low-risk category with < 1% in-hospital mortality.
The GRACE score was developed from the Global Registry of Acute Coronary Events, a prospective multinational registry established in 1999 across 94 hospitals in 14 countries. The original model was derived from over 40,000 patients and has been externally validated in numerous independent cohorts worldwide. The C-statistic for in-hospital mortality prediction exceeds 0.80, demonstrating excellent discriminative ability.
The ESC guidelines for the management of ACS without persistent ST-elevation recommend GRACE scoring for all NSTEMI and unstable angina patients. The score categorizes patients into low (≤ 108), intermediate (109–140), or high (> 140) risk groups. High-risk patients benefit from early invasive strategy with coronary angiography within 24 hours, while very high-risk patients (ongoing ischemia, hemodynamic instability) should undergo immediate angiography within 2 hours.
The updated GRACE 2.0 model (2014) allows substitution of creatinine clearance for serum creatinine and Killip class for diuretic use, making it applicable when complete data are unavailable. The GRACE risk calculator has also been extended to predict 1-year and 3-year mortality, further enhancing its clinical utility for long-term risk communication and secondary prevention planning.
The GRACE score is a validated clinical tool that estimates in-hospital and 6-month mortality risk in patients with acute coronary syndromes. It was derived from an international registry of over 40,000 ACS patients across 94 hospitals.
The GRACE score should be calculated at the time of ACS presentation to guide risk stratification and treatment strategy. It can be recalculated during hospitalization as clinical parameters change.
A GRACE score > 140 indicates high risk (> 3% in-hospital mortality, > 8% 6-month mortality). These patients benefit from early invasive strategy with coronary angiography within 24 hours per ESC guidelines.
The GRACE score helps determine the timing and aggressiveness of treatment. High-risk patients (> 140) should undergo early invasive strategy, while low-risk patients (≤ 108) may be managed conservatively with non-invasive testing.
Killip classification assesses heart failure severity in AMI: Class I (no CHF), Class II (rales, JVD, S3), Class III (pulmonary edema), and Class IV (cardiogenic shock). Higher classes carry significantly worse prognosis.
Yes, the GRACE score is validated for all ACS presentations including STEMI, NSTEMI, and unstable angina. However, STEMI patients typically proceed directly to primary PCI regardless of GRACE score.