CHA2DS2-VASc Score Calculator
About CHA2DS2-VASc Score
The CHA2DS2-VASc score is a risk assessment tool used to estimate the risk of stroke in patients with atrial fibrillation (AF). It helps guide decisions about anticoagulation therapy in AF patients.
Score Components:
- C: Congestive heart failure (1 point)
- H: Hypertension (1 point)
- A2: Age ≥75 years (2 points)
- D: Diabetes mellitus (1 point)
- S2: Prior Stroke or TIA or thromboembolism (2 points)
- V: Vascular disease (1 point)
- A: Age 65-74 years (1 point)
- Sc: Sex category (female) (1 point)
Interpretation:
- 0: Low risk
- 1: Low-moderate risk
- ≥2: Moderate-high risk
Clinical Significance:
The CHA2DS2-VASc score helps clinicians determine whether anticoagulation therapy is necessary for patients with atrial fibrillation. Higher scores indicate a greater risk of stroke and a stronger recommendation for anticoagulation.
Limitations:
While the CHA2DS2-VASc score is widely used and validated, it does not account for all factors that may influence stroke risk. Clinical judgment should always be used in conjunction with this score when making treatment decisions.
References:
- Lip GY, Nieuwlaat R, Pisters R, Lane DA, Crijns HJ. Refining clinical risk stratification for predicting stroke and thromboembolism in atrial fibrillation using a novel risk factor-based approach: the euro heart survey on atrial fibrillation. Chest. 2010;137(2):263-272.
- January CT, Wann LS, Calkins H, et al. 2019 AHA/ACC/HRS Focused Update of the 2014 AHA/ACC/HRS Guideline for the Management of Patients With Atrial Fibrillation. Circulation. 2019;140(2):e125-e151.