| Factor | Input | Points |
|---|---|---|
| Total | 0 | |
Example data table
These sample entries illustrate typical input combinations. Use “Load example” to copy one set into the form.
| Scenario | Model | ACS type | Age | HR | SBP | Cr | Killip | Arrest | ST dev | Markers |
|---|---|---|---|---|---|---|---|---|---|---|
| Lower risk example | In-hospital | NSTE | 54 | 78 | 135 | 1.00 | I | No | No | Yes |
| Higher risk example | In-hospital | STE | 82 | 118 | 92 | 2.30 | III | No | Yes | Yes |
Formula used
This calculator uses the original GRACE point-sum method. Each variable maps to a fixed number of points; the total is the GRACE score.
- In-hospital model: Age + Heart rate + Systolic BP + Creatinine + Killip class + Cardiac arrest + ST deviation + Elevated markers.
- 6-month model: Age + Heart rate + Systolic BP + Creatinine + History of heart failure + History of MI + Elevated markers + ST depression + No in-hospital PCI.
How to use this calculator
- Select the model (in-hospital or 6-month) and ACS type.
- Enter the admission values: age, heart rate, systolic BP, and creatinine.
- Complete the remaining fields that appear for the chosen model.
- Press Calculate to view score, band, and estimates above the form.
- Use Download CSV or Download PDF to save results.
Clinical guidance
GRACE supports risk stratification in acute coronary syndromes. It should complement ECG interpretation, biomarkers, imaging, treatment response, and institutional pathways. Always apply local policy and clinician judgment for triage decisions.
Clinical risk stratification in acute coronary syndromes
Why GRACE matters at the bedside
Risk assessment in suspected acute coronary syndrome supports safer triage, earlier specialist review, and more consistent communication. GRACE combines readily available admission variables into a single score that correlates with short-term death risk. It is especially useful when symptoms, ECG changes, and biomarker results are evolving, or when multiple comorbidities complicate decision-making.
Inputs that drive the score
The classic in-hospital model uses age, heart rate, systolic blood pressure, serum creatinine, Killip class, cardiac arrest at admission, ST-segment deviation, and elevated cardiac markers. Each input contributes a defined number of points. Higher age, tachycardia, hypotension, worse renal function, and higher Killip class typically add substantial points because they reflect hemodynamic stress and organ vulnerability.
Interpreting bands and estimated mortality
Scores are often grouped into low, intermediate, and high categories using model-specific thresholds for NSTE and STE presentations. For the in-hospital model, the calculator also provides an approximate mortality percentage using published nomogram anchors with interpolation. Treat the percentage as an estimate rather than a guarantee, and interpret it alongside clinical trajectory and treatment response.
How to use results in workflow
Document the total score, risk band, and key drivers such as low blood pressure or higher Killip class. Use the result to prioritize monitoring intensity, escalation pathways, and timely reperfusion or invasive evaluation where indicated. Pair the score with guideline-directed therapy, bleeding risk assessment, and shared decision-making, particularly when considering early discharge versus inpatient observation. When handing off care, share the score with the time of measurement and the values used, so another team can reproduce it. If a patient receives fluids, vasopressors, oxygen, or analgesia, note that these interventions may change heart rate and blood pressure, altering the final points and can shift the risk band.
Limitations and data quality checks
GRACE depends on accurate first measurements and consistent definitions of ST changes and biomarkers. Creatinine units must be correct, and missing data can distort risk. The tool does not replace clinician judgment, local protocols, or definitive diagnostics. Recalculate if vitals change significantly, and avoid using the score as the sole reason to withhold evaluation or treatment.
FAQs
Does GRACE apply to all chest pain patients?
It is designed for confirmed or strongly suspected acute coronary syndromes. For non-cardiac chest pain or unclear diagnoses, use clinical evaluation first and apply risk tools only when appropriate.
Which creatinine unit should I enter?
Enter serum creatinine in mg/dL. If your lab reports µmol/L, convert before use to avoid major scoring errors and misleading risk categorization.
Why do risk thresholds differ for STE and NSTE?
Baseline risk profiles and outcome rates differ between presentations, so typical cutoffs used in practice separate low, intermediate, and high risk at different score values for each group.
Can I recalculate after treatment starts?
Yes. If vitals change meaningfully after fluids, analgesia, oxygen, or hemodynamic support, a repeat score can better reflect current status. Document the time and values used.
What does “Band only” mean for the 6-month model?
This page provides the commonly used risk band for post-discharge assessment. Percentage estimates vary by cohort and chart source, so the band is shown as the primary interpretation.
Is this calculator a substitute for medical advice?
No. It is an educational aid. Clinical decisions must follow local protocols, clinician judgment, and definitive diagnostics including ECG interpretation, biomarker trends, imaging, and response to therapy.