Question

A 73-year-old man with non-valvular atrial fibrillation is established on warfarin. What is the usual target INR range for stroke prevention in atrial fibrillation?

Accepted Answer

2.0–3.0 (target 2.5)

Answer

1.0–1.5

Answer

1.5–2.0

Answer

3.0–4.0 (target 3.5)

Answer

4.0–5.0

Practice question

A 73-year-old man with non-valvular atrial fibrillation is established on warfarin. What is the usual target INR range for stroke prevention in atrial fibrillation?