Question

A 68-year-old woman with non-valvular atrial fibrillation is well controlled on warfarin with a target INR of 2.5. She asks what INR range is recommended for stroke prevention in AF. What is the appropriate target INR range?

Accepted Answer

2.0–3.0

Answer

1.0–1.5

Answer

1.5–2.0

Answer

3.5–4.5

Answer

4.5–5.5

Practice question

A 68-year-old woman with non-valvular atrial fibrillation is well controlled on warfarin with a target INR of 2.5. She asks what INR range is recommended for stroke prevention in AF. What is the appropriate target INR range?