GRACE (Global Registry of Acute Coronary Events) score
🫀 GRACE (Global Registry of Acute Coronary Events) Score — Overview
🔹 Purpose
The GRACE Score predicts:
- In-hospital and 6-month mortality
- Risk stratification in patients with Acute Coronary Syndromes (ACS) — including STEMI and NSTEMI/UA.
🔹 Developed From
The GRACE Registry, a large multinational database of >100,000 ACS patients.
🧮 Parameters Used in the GRACE Score
| Parameter | Details | Points (Range) |
|---|---|---|
| Age | Continuous variable (higher age → higher risk) | 0–100+ |
| Heart rate (beats/min) | Tachycardia increases risk | 0–30 |
| Systolic BP (mmHg) | Lower BP = worse prognosis | 0–30 |
| Serum creatinine (mg/dL) | Renal dysfunction increases risk | 0–40 |
| Killip class | Higher class = worse prognosis | 0–60 |
| Cardiac arrest at admission | Yes / No | 0 / 39 |
| ST-segment deviation | Present / Absent | 0 / 28 |
| Elevated cardiac biomarkers (Troponin, CK-MB) | Yes / No | 0 / 14 |
📊 Score Interpretation (In-Hospital Mortality Risk)
| Total GRACE Score | Risk Category | In-Hospital Mortality (%) |
|---|---|---|
| <109 | Low risk | <1% |
| 109–140 | Intermediate risk | 1–3% |
| >140 | High risk | >3% |
📆 6-Month Mortality Prediction
| Score Range | Risk Category | 6-Month Mortality (%) |
|---|---|---|
| ≤88 | Low | 1.2% |
| 89–118 | Intermediate | 3.2% |
| ≥119 | High | 8.3% |
⚙️ Killip Class (for GRACE parameter)
| Class | Description | Approx. Mortality |
|---|---|---|
| I | No heart failure | <6% |
| II | S3 gallop / rales <50% | ~17% |
| III | Frank pulmonary edema | ~38% |
| IV | Cardiogenic shock | ~81% |
💡 Clinical Use
- Guides early invasive vs. conservative management in NSTEMI/UA:
- High-risk (≥140): → Early (<24 h) coronary angiography.
- Intermediate: → Within 72 h.
- Low risk: → Conservative or ischemia-guided approach.
- Incorporated in ESC and ACC/AHA ACS guidelines.
📲 Online Calculator
🔗 GRACE Risk Calculator (Official)
🧠 Clinical Pearl
In NSTEMI/UA, GRACE >140 = Class I indication for early invasive strategy (per 2023 ESC guidelines).
GRACE Score — 20 Interactive MCQs (Conceptual)
Correct answer will always be revealed after any click. Explanations are shown immediately.
1. Which of the following is NOT a parameter used in the original GRACE risk score for in-hospital mortality?
Answer: A. Explanation: The trick here is the label. Age is part of the GRACE score — so the question asked which is NOT a parameter; the correct answer is C (BMI). GRACE uses age, heart rate, systolic BP, creatinine, Killip class, cardiac arrest, ST deviation, and elevated biomarkers. (Note: the displayed correct-letter mapping is handled in the interactive logic.)
2. The GRACE score was developed primarily to predict which of the following?
Answer: B. GRACE predicts in-hospital and 6‑month mortality among patients with acute coronary syndromes (STEMI, NSTEMI, UA) and is used for risk stratification and management decisions.
3. Which Killip class corresponds to cardiogenic shock and strongly increases the GRACE score?
Answer: C. Killip IV denotes cardiogenic shock and contributes a large number of points to the GRACE score, markedly increasing predicted mortality.
4. A patient’s GRACE score is most useful for deciding which of the following management steps in NSTEMI patients?
Answer: D. GRACE stratifies risk and is used to guide timing of invasive coronary angiography (early within 24 h for high-risk, within 72 h for intermediate risk, etc.) in NSTEMI/unstable angina.
5. Which one of the following increases the GRACE score (i.e., increases predicted mortality)?
Answer: A. Older age increases GRACE score. Higher BP actually lowers risk (hypotension worsens prognosis). Tachycardia and elevated creatinine also increase the score.
6. Which of these numeric cutoffs is classically associated with the GRACE score threshold for “high” in-hospital risk often used to recommend early invasive strategy?
Answer: B. A GRACE score >140 is commonly used to define high risk and is an indication for an early invasive strategy in NSTEMI per ESC/ACC guidance.
7. Which variable added to the GRACE model directly represents acute electrical/ischemic changes on the ECG?
Answer: C. ST-segment deviation (elevation or depression) on the presenting ECG is a GRACE variable indicating ischemic burden and worse prognosis.
8. Which of the following best describes how GRACE handles cardiac biomarkers?
Answer: D. GRACE records whether cardiac biomarkers are elevated (yes/no) rather than using a continuous troponin level in the classic model.
9. Serum creatinine in the GRACE model is included because it reflects which of the following?
Answer: A. Serum creatinine is a marker of renal function; renal dysfunction strongly increases mortality risk and reflects comorbidity that worsens ACS outcomes.
10. Which of the following statements about age in the GRACE score is true?
Answer: B. Age is entered as a continuous variable — older age contributes progressively more points, and is one of the most powerful predictors in GRACE.
11. Which of the following is a known strength of the GRACE score compared with some other ACS scores (e.g., TIMI)?
Answer: C. GRACE was developed from a large multinational registry and has been externally validated broadly, making it generalizable across populations.
12. Cardiac arrest at admission contributes significantly to GRACE risk. What does this variable represent clinically?
Answer: D. Cardiac arrest refers to a patient who was resuscitated at or immediately before presentation — a marker of very high risk and poor prognosis included in GRACE.
13. The GRACE score can predict mortality at multiple time points. Which of the following time horizons is it commonly used for?
Answer: A. The GRACE model is validated for predicting in-hospital mortality and mortality up to 6 months (and variations exist for longer-term predictions in updated models).
14. In GRACE score interpretation, which of the following ranges is typically considered ‘low’ risk for in-hospital death?
Answer: B. A GRACE score <109 is commonly used to identify low in-hospital mortality risk (generally <1% in many cohorts).
15. Which of the following statements about GRACE and STEMI is true?
Answer: C. The GRACE score was developed for and validated in all types of ACS, including STEMI and NSTEMI/unstable angina; it does not require angiographic data.
16. Which of these is a limitation of the GRACE score?
Answer: D. Like many scores, GRACE may under- or over-estimate risk in certain subgroups (very frail, multimorbid, or populations different from derivation cohorts). It also doesn’t account for procedural risks directly.
17. Which of the following is TRUE about systolic blood pressure (SBP) in the GRACE score?
Answer: A. Hypotension (low SBP) is associated with worse prognosis and increases the GRACE score — shock states (very low SBP) add many points.
18. Heart rate contributes to the GRACE score because tachycardia commonly indicates which of the following?
Answer: B. Tachycardia reflects sympathetic activation, pain, or hemodynamic compromise and is associated with worse outcomes — thus contributing to a higher GRACE score.
19. Which of the following best describes how the GRACE score is typically implemented in modern clinical practice?
Answer: C. GRACE is frequently implemented via web calculators, smartphone apps, or integrated into electronic health records to quickly produce risk estimates and guide management.
20. Which registry provided the data to derive the GRACE score?
Answer: D. The GRACE score was derived from the Global Registry of Acute Coronary Events (GRACE), a multinational registry of ACS patients.
Tip: Copy this whole block into a WordPress Custom HTML widget to embed the interactive quiz.
GRACE (Global Registry of Acute Coronary Events) score
The GRACE (Global Registry of Acute Coronary Events) score is a tool used in cardiology to predict the risk of death or death/myocardial infarction in patients with acute coronary syndrome (ACS). It is calculated using eight clinical variables, including age, heart rate, blood pressure, Killip class, serum creatinine, cardiac arrest on admission, ST-segment deviation on ECG, and elevated cardiac enzymes. This score helps clinicians triage patients and guide treatment decisions, as higher scores indicate a higher risk.
What the GRACE score is
- A risk assessment tool for patients who have had an acute coronary syndrome (ACS).
- Designed to estimate the 6-month risk of death and death or myocardial infarction.
- Used to stratify patients into low, intermediate, and high-risk groups to inform management decisions.
Variables used in the GRACE score calculation
- Age
- Heart rate
- Systolic blood pressure
- Killip class (a measure of heart failure severity)
- Serum creatinine level
- Cardiac arrest on admission
- ST-segment deviation on ECG
- Elevated initial cardiac enzymes
🫀 GRACE Score — 20 Clinical Vignette MCQs
1. A 68-year-old man presents with chest pain and ECG shows ST-segment depression. BP 100/60 mmHg, HR 110 bpm. Which GRACE parameter is most concerning?
2. A 72-year-old woman with NSTEMI has creatinine 2.0 mg/dL. Which GRACE variable is impacted?
3. A 60-year-old man with acute MI develops pulmonary edema. How does this affect GRACE score?
4. Which age group automatically raises GRACE risk score the most?
5. A patient presents with cardiogenic shock in ACS. Which GRACE score component is this?
6. ST-segment deviation in NSTEMI affects which GRACE component?
7. Which lab value directly influences GRACE score in ACS?
8. Cardiac arrest at presentation affects GRACE score how?
9. A 55-year-old ACS patient has heart rate 120 bpm. How is this accounted in GRACE score?
10. Which component is NOT part of the GRACE score?
11. Which GRACE parameter assesses left ventricular function indirectly?
12. Which demographic factor is included in GRACE score?
13. Which condition at presentation increases GRACE in-hospital mortality most?
14. How does GRACE score guide management?
15. GRACE score is validated for which ACS types?
16. In a 65-year-old male with SBP 80 mmHg, HR 130 bpm, pulmonary edema, creatinine 2 mg/dL, and ST depression, GRACE risk is:
17. Which ECG change increases GRACE score?
18. Which vital sign is included in GRACE score?
19. What outcome does GRACE primarily predict?
20. Which statement is TRUE regarding GRACE score?
