A 70-year-old female with non-valvular atrial fibrillation has a history of hypertension, type 2 diabetes mellitus, and a prior ischemic stroke 2 years ago. What is her CHA₂DS₂-VASc score?
Answer and explanation
Correct answer: A. 6
- Step 1: Calculate individual risk components: Hypertension = 1; Diabetes = 1; Prior Stroke/TIA = 2 points.
- Step 2: Add demographic risk: Age 70 (category 65–74) = 1 point; Female sex category = 1 point. Summing all points: .
Answer
6.
Why not the others: 4 omits age and sex points; 5 forgets female sex; 7 mistakenly assigns 2 points for age 70 (age gets 2 points, but age 65–74 gets 1 point).
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