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CHA2DS2-VASc Score Calculator

Calculate stroke risk for patients with atrial fibrillation based on the clinical CHA2DS2-VASc scoring model.

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Input Parameters

Enter details for calculation.

CHA2DS2-VASc Score

0
Low Stroke Risk
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Expert Tip

A score of 2 or more in men (or 3 in women) warrants oral anticoagulation therapy to prevent thromboembolism.

Calculation Methodology & Details

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Formula

Score = Sum of active clinical risk factors (max 9)

Points assigned based on age, sex, cardiovascular history, and vascular status.

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Important Disclaimer

The calculations provided are for educational and general informational purposes only. They do not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.

How CHA2DS2-VASc is Calculated

Follow these steps to use this calculator:

1

Input Patient Details

Select age and medical history factors.

2

Read Stroke Risk

Evaluate score and guideline recommendations.

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ℹ️ About this Calculation

This clinical cardiovascular calculator provides precise hemodynamics assessment, ischemic heart disease risk stratification, electrophysiology calculations, and vascular disease evaluation based on ACC/AHA guidelines.

Variable Glossary

Input

Vascular & ECG Data

Systolic/diastolic blood pressure, pulse rate, ECG intervals (QT/RR), or ankle-brachial Doppler pressures.

Parameter

Hemodynamic Scores

Mean arterial pressure (MAP), corrected QTc interval, ASCVD 10-year risk percentage, or ejection fraction.

How to Calculate Step-by-Step

1

Step 1

Input hemodynamic vitals, lab values, or ECG measurement parameters.

2

Step 2

Select patient demographics, clinical comorbidities, or exercise test responses.

3

Step 3

Review calculated risk scores, hemodynamic parameters, and clinical classification recommendations.

FAQ

How is Mean Arterial Pressure (MAP) calculated?
MAP reflects average arterial pressure during a cardiac cycle. It is calculated as DP + 1/3(SP - DP), where DP is diastolic pressure and SP is systolic pressure.
What is the clinical significance of a prolonged QTc interval?
A QTc interval above 450 ms in men or 460 ms in women increases the risk of ventricular arrhythmias, specifically Torsades de Pointes.
Can risk scores replace acute clinical evaluation?
No. Risk calculators like HEART, TIMI, or GRACE assist emergency clinicians, but should never replace clinical judgment or urgent medical intervention in acute coronary syndromes.