🫀 Cardiovascular
Got AF — should you take an anticoagulant? CHA₂DS₂-VASc shows your stroke risk
CHA₂DS₂-VASc is the international AF stroke-risk score, using heart failure, hypertension, age, diabetes, stroke history, vascular disease and sex — total 0-9; higher means higher stroke risk. It is a key reference for whether AF patients need anticoagulation (warfarin, dabigatran, rivaroxaban, etc.). Generally men ≥2 and women ≥3 are advised anticoagulation. This helps you understand your risk and talk with your doctor, but the decision must be a doctor's — do not start or stop anticoagulants yourself. Free; scored locally.
無料で開始する →Free · auto-scored · for discussion with your doctor only
For patients with confirmed atrial fibrillation (AF), to estimate stroke risk and inform an anticoagulation discussion with your doctor
よくある質問
高得点は必ず抗凝固が必要ですか？
Not always, but it indicates high stroke risk usually warranting a doctor's anticoagulation assessment. Whether, which and what dose must be a doctor's decision weighing your bleeding risk (HAS-BLED) and overall situation. Do not start or stop on your own.
女性に加点があるのはなぜですか？
CHA₂DS₂-VASc counts female sex as a risk factor (1 point). But if a woman has no other risk factors (the 1 point is only from sex), that alone is usually not a reason to anticoagulate — which is why a doctor interprets sex.
心房細動がなくても使えますか？
This score is specifically for atrial fibrillation patients. Without AF it has no corresponding meaning. Whether you have AF needs an ECG and a doctor's diagnosis.