CHA₂DS₂-VASc Calculator
Estimate thromboembolic stroke-risk points for a patient with atrial fibrillation using the standard CHA₂DS₂-VASc clinical criteria.
Enter patient details
Result
Enter the patient details to calculate the score.
Age contributes differently
Age 65–74 adds one point, while age 75 or older adds two points. The age categories are not added together.
Previous stroke adds two
A prior stroke, transient ischemic attack, or systemic embolism is weighted more heavily than most other factors.
Use with clinical judgment
The score supports risk assessment in atrial fibrillation but does not replace clinician review or individualized treatment planning.
Frequently asked questions
What does CHA₂DS₂-VASc stand for?
It represents congestive heart failure, hypertension, age, diabetes, prior stroke or TIA, vascular disease, another age category, and sex category.
Who is this score designed for?
It is commonly used to estimate thromboembolic risk in people with atrial fibrillation or atrial flutter. It should not be used as a self-diagnosis tool.
Does a higher score mean higher risk?
Generally, yes. A higher score reflects more clinical stroke-risk factors, but treatment decisions also depend on bleeding risk and other medical considerations.
Why is sex category included?
Female sex contributes one point in the traditional CHA₂DS₂-VASc score. Some newer guidelines use CHA₂DS₂-VA, which removes sex category, so local guidance should be followed.
This tool is for educational and informational purposes only and does not constitute medical advice, diagnosis or treatment. Always consult a qualified healthcare professional for clinical decisions. VisionVix accepts no liability for decisions made based on this tool's output.
