Assess the risk of major adverse cardiac events (MACE) in chest pain patients presenting to the emergency department. The HEART score is a validated clinical risk stratification tool based on History, ECG, Age, Risk Factors, and Troponin.
| Component | Score | Description |
|---|
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Evaluate the patient's presenting symptoms. Highly suspicious history includes typical anginal chest pain radiating to arm/jaw, associated with diaphoresis or nausea. Moderately suspicious includes atypical chest pain. Slightly suspicious includes non-cardiac symptoms.
Analyze the 12-lead ECG. A normal ECG with no ischemic changes scores 0. Non-specific ST/T wave abnormalities score 1. Significant ST-segment depression (≥ 0.5 mm) scores 2.
Age is a well-established cardiovascular risk factor. Patients ≤ 45 years score 0, those 46-65 score 1, and patients ≥ 65 years score 2 points.
Count major cardiovascular risk factors: hypertension, hypercholesterolemia, diabetes, obesity (BMI ≥ 30), smoking, and family history of premature CAD. Also consider history of CAD (MI, PCI, CABG).
Use the initial troponin assay. Normal (≤ 99th percentile) scores 0. Elevated 1-3x normal scores 1. Markedly elevated > 3x normal scores 2 points.
Sum all components (0-10). Low risk (0-3): 1-2% MACE at 6 weeks — consider early discharge. Moderate (4-6): 9-13% MACE — admit for observation. High (7-10): 31-49% MACE — urgent cardiology consultation.
The HEART score is calculated by summing five components, each scored 0, 1, or 2:
Where:
Total Range: 0 to 10 points
0 points Slightly suspicious: Atypical chest pain, no prior cardiac history, symptoms not suggestive of ACS.
1 point Moderately suspicious: Atypical/possible anginal symptoms, non-specific presentation.
2 points Highly suspicious: Typical anginal chest pain radiating to arm/shoulder/jaw, associated with diaphoresis, nausea, or vomiting.
0 points Normal ECG: No ST-segment or T-wave abnormalities.
1 point Non-specific repolarization disturbance: Minor ST/T changes, bundle branch blocks, paced rhythms, LVH with strain.
2 points Significant ST-segment depression: ≥ 0.5 mm ST depression in two or more contiguous leads, without LVH or digoxin effect.
0 points ≤ 45 years: Low age-related cardiovascular risk.
1 point 46 to 65 years: Moderate age-related risk.
2 points ≥ 65 years: High age-related cardiovascular risk.
0 points No known risk factors: Absence of hypertension, hypercholesterolemia, diabetes, obesity, smoking, or family history of CAD.
1 point 1-2 risk factors present.
2 points ≥ 3 risk factors OR history of CAD (previous MI, PCI, CABG).
0 points Normal: Troponin level ≤ 99th percentile upper reference limit.
1 point 1 to 3 times normal: Mildly elevated troponin.
2 points > 3 times normal: Significantly elevated troponin indicating myocardial injury.
| Score Range | Risk Category | MACE Risk (6 Weeks) | Recommendation |
|---|---|---|---|
| 0 - 3 | Low Risk | 1.0% - 2.0% | Consider discharge with outpatient follow-up |
| 4 - 6 | Moderate Risk | 9.0% - 13.0% | Admit for observation and serial troponin testing |
| 7 - 10 | High Risk | 31.0% - 49.0% | Urgent cardiology consultation, consider early invasive strategy |
The HEART score was developed by Dr. J. Six and colleagues in the Netherlands to standardize risk stratification of chest pain patients in the emergency department. It was first published in 2008 in the Netherlands Heart Journal.
The HEART score has been extensively validated in multiple international cohorts involving over 100,000 patients. It consistently demonstrates excellent discriminatory power with c-statistics of 0.83-0.90 for predicting 30-day MACE.
Implementation of the HEART score in ED settings has been shown to reduce unnecessary hospital admissions by 20-40% while maintaining high sensitivity (98-100%) for identifying patients at risk of MACE, improving resource utilization.
The HEART score outperforms other chest pain risk stratification tools including TIMI, GRACE, and Goldman criteria, particularly in identifying low-risk patients who can be safely discharged from the ED without extensive cardiac testing.
The following are considered risk factors in the HEART score:
The HEART score is a clinical risk stratification tool designed specifically for patients presenting to the emergency department with chest pain. The acronym stands for History, ECG, Age, Risk factors, and Troponin — five critical components that together predict the risk of major adverse cardiac events (MACE) within 6 weeks of presentation. Each component is scored 0, 1, or 2 points, yielding a total score ranging from 0 to 10.
Chest pain is one of the most common reasons for emergency department visits, accounting for approximately 5-10% of all ED encounters. However, only 15-20% of these patients actually have acute coronary syndrome (ACS). Clinicians face a daily challenge: identify the patients at high risk of MACE who need immediate intervention, while avoiding unnecessary admissions for the majority who are at very low risk. The HEART score provides a systematic, evidence-based approach to this decision, helping reduce unnecessary hospitalizations by up to 40% while maintaining excellent safety.
The HEART score divides patients into three risk categories based on their total score:
The HEART score is intended for use in adult patients (≥ 18 years) presenting to the emergency department with chest pain or other symptoms suggestive of acute coronary syndrome. It should be applied at the time of initial presentation, using the first available troponin value. The score is most useful for patients without ST-segment elevation on ECG (i.e., those being evaluated for NSTEMI or unstable angina). Patients with STEMI should proceed directly to emergent reperfusion.
While the HEART score is a powerful risk stratification tool, it has several important limitations. The subjective nature of the "History" component can lead to inter-observer variability. The score was validated primarily in Western populations, and performance may vary in other demographic groups. The HEART score should always be used in conjunction with clinical judgment and local protocols. It is not designed to replace clinical decision-making but rather to support it with an objective, reproducible framework.
More accurate identification of low-risk patients who can be safely discharged, reducing unnecessary admissions and healthcare costs while maintaining patient safety.
By identifying low-risk patients early, the HEART score helps reduce emergency department crowding and allows resources to be focused on patients who truly need them.
Provides a consistent, reproducible framework for chest pain evaluation across different clinicians, shifts, and institutions, reducing unwanted practice variation.
Gives clinicians an evidence-based tool that supports discharge decisions, reducing the anxiety and medicolegal concerns associated with sending chest pain patients home.
Reduces healthcare costs by decreasing unnecessary admissions, testing, and procedures in low-risk patients, while ensuring high-risk patients receive timely, appropriate care.
Extensively validated in multiple international cohorts with over 100,000 patients, making it one of the most well-studied chest pain risk scores available.
Our HEART Score Calculator is a free, clinical-grade risk stratification tool designed for healthcare professionals evaluating chest pain patients in the emergency department. Based on the validated HEART score developed by Dr. J. Six and colleagues, this calculator provides an objective, reproducible assessment of MACE risk using five essential clinical components: History, ECG, Age, Risk Factors, and Troponin.
Based on the internationally validated HEART score protocol, supported by extensive research published in peer-reviewed medical journals with validation across multiple international cohorts.
Clear, intuitive risk visualization with a color-coded risk bar and detailed score breakdown, making it easy to communicate findings to colleagues and patients.
Evidence-based clinical recommendations for each risk category, including disposition suggestions and next steps for patient management.
All calculations are performed entirely in your browser. No patient information is stored, transmitted, or shared with any third parties.
Comprehensive information about each HEART score component, the underlying evidence, and practical guidance for clinical application.
Complete access to all features with no registration, no hidden fees, and no usage limits. Use it as often as needed in your clinical practice.
Important Medical Disclaimer: This HEART Score Calculator is for educational and clinical decision-support purposes only. It is not a substitute for professional medical judgment, clinical assessment, or institutional protocols. The HEART score should be used as one component of a comprehensive clinical evaluation. Always follow your institution's guidelines for the management of chest pain patients. In cases of suspected acute coronary syndrome requiring immediate intervention (e.g., STEMI), activate the appropriate emergency protocols without delay. The creators of this tool assume no liability for clinical decisions made using this calculator.