A tool to support the clinical decisions of doctors and health professionals, not for self-diagnosis or self-treatment.
This calculator is inside the patient's file in Clinicato: open it from "Medical tools" while you chart the visit, it fills in from the patient's details and vital signs where they are recorded, and adds its result to the visit's plan in one tap, with the "Medical tools" add-on. Try it in your clinic
Calculator
How it works and when to use it
The score adds points for each risk factor: heart failure, hypertension, age 75 or more (2), diabetes, prior stroke or thromboembolism (2), vascular disease, age 65 to 74, and female sex.
The ESC 2024 guidelines use CHA2DS2-VA without the sex point: oral anticoagulation is recommended from 2 and considered at 1, and the calculator shows both scores.
Reference: Lip GYH et al. Chest 2010;137:263-72; ESC 2020 AF guidelines (Hindricks et al.) for CHA2DS2-VASc; ESC 2024 AF guidelines (Van Gelder et al.) for CHA2DS2-VA
Frequently asked questions
Why was the sex point dropped in 2024?
Female sex adds risk mainly alongside other factors, and dropping it simplifies the decision without changing much who needs treatment.
Is the score enough to start anticoagulation?
No, the decision weighs stroke risk against bleeding risk and the patient's wishes, with bleeding assessed by a score such as HAS-BLED.
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Clinic software for this specialty
Try Clinicato for your clinic
These calculators are free here for everyone, and in Clinicato 49 medical tools work inside the patient's file with the "Medical tools" add-on: filled from the visit and the vital signs, with the result added to the visit's plan, next to appointments, prescriptions and invoices.