GRACE Score Calculator
Calculate the Global Registry of Acute Coronary Events (GRACE) score to predict in-hospital and 6-month mortality risk in patients with acute coronary syndrome (ACS).
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Key values and context for this tool: • Variables: 8 Clinical • Mortality Risk: In-hospital + 6mo • C-statistic: 0.82
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Why: GRACE is the most widely validated risk score for ACS, recommended by ESC and ACC/AHA guidelines for guiding invasive vs conservative treatment strategies.
How: Enter age, heart rate, systolic BP, creatinine, cardiac arrest, ST changes, troponin, Killip class. The logistic regression model computes mortality probability.
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For informational purposes only — not medical advice. Consult a healthcare professional before acting on results.
The GRACE (Global Registry of Acute Coronary Events) score predicts mortality in acute coronary syndromes using 8 clinical variables. Developed from a multinational registry, it stratifies patients into low (≤108), intermediate (109-140), and high (>140) risk. GRACE 2.0 provides calibrated in-hospital, 30-day, 6-month, and 1-year mortality estimates. It guides treatment intensity: conservative vs. early invasive vs. immediate invasive strategy.
Sources: GRACE Registry, ESC Guidelines, ACC/AHA, Fox et al. BMJ.
Key Takeaways
- • Low risk (≤108): Selective invasive strategy, early discharge possible
- • Intermediate (109-140): Early invasive strategy within 24-72 hours
- • High risk (>140): Immediate invasive strategy within 2 hours
- • Systolic BP has inverse relationship—lower BP adds more points
Did You Know?
How Does the GRACE Score Work?
Variables
Age, heart rate, systolic BP, creatinine, Killip class (heart failure severity), cardiac arrest, ST deviation, elevated cardiac markers. Each has a point value from published look-up tables.
Mortality Model
GRACE 2.0 uses logistic regression: mortality = exp(β₀ + β₁×score) / (1 + exp(β₀ + β₁×score)). Coefficients differ for in-hospital, 30-day, 6-month, and 1-year outcomes.
Treatment Path
Low risk: conservative, stress test before discharge. Intermediate: early invasive 24-72h. High: immediate invasive <2h, especially with hemodynamic instability.
Expert Tips
GRACE Risk Categories
| Score | Category | In-Hospital | 6-Month | Strategy |
|---|---|---|---|---|
| ≤108 | Low | <1% | <3% | Selective invasive |
| 109-140 | Intermediate | 1-3% | 3-8% | Early invasive 24-72h |
| >140 | High | >3% | >8% | Immediate invasive <2h |
Frequently Asked Questions
What is the GRACE Score?
The Global Registry of Acute Coronary Events (GRACE) score predicts in-hospital and 6-month mortality in acute coronary syndromes (ACS). It uses 8 clinical variables: age, heart rate, systolic BP, creatinine, Killip class, cardiac arrest, ST deviation, and elevated cardiac markers. Scores range 0-263; low risk ≤108, intermediate 109-140, high risk >140.
What variables does the GRACE Score use?
Eight variables: Age (0-91 pts), heart rate (0-46), systolic BP (0-58, inverse—lower BP = more points), creatinine (0-39), Killip class (0-59), cardiac arrest (+39), ST deviation (+28), elevated markers (+14). Each has published point values; total is summed. Mortality is derived from logistic regression (GRACE 2.0).
What are the GRACE Score risk categories?
Low risk (≤108): In-hospital mortality <1%, 6-month <3%. Intermediate (109-140): In-hospital 1-3%, 6-month 3-8%. High risk (>140): In-hospital >3%, 6-month >8%. Treatment recommendations escalate: conservative vs. early invasive 24-72h vs. immediate invasive <2h.
GRACE Score vs TIMI Score: when to use which?
GRACE predicts mortality (in-hospital, 6-month) and uses 8 variables including Killip and creatinine. TIMI predicts 14-day death/MI and uses 7 variables. Both guide invasive strategy. GRACE is preferred in ESC guidelines; TIMI is common in US. Use GRACE for comprehensive mortality risk; use TIMI for rapid bedside assessment.
How does GRACE impact clinical decisions?
Low risk: selective invasive strategy, early discharge possible. Intermediate: early invasive strategy within 24-72 hours. High risk: immediate invasive strategy within 2 hours. GRACE helps triage ACS patients, guide anticoagulation intensity, and inform family discussions. Combined with bleeding risk (CRUSADE) for dual assessment.
What are the limitations of the GRACE Score?
Requires complete data (creatinine, Killip). May underestimate risk in very elderly or those with comorbidities. Hemodynamic instability overrides score—urgent intervention regardless. Not validated in pediatric or non-ACS chest pain. Should complement, not replace, clinical judgment.
Key Statistics
Official Data Sources
⚠️ Disclaimer: This calculator is for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for clinical decisions. GRACE Score should be used as decision support, not in isolation.
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