Therapeutic Ranges

INR Clinical state
2.0 – 2.5 DVT prophylaxis
2.0 – 3.0 Treatment of DVT/PE
Systemic embolus
atrial fibrillation
TIAs
LV mural thrombus
Mitral valve repair
2.5 – 3.5 Tissue heart valves
Mechanical prosthetic heart valves implanted after 1990
Recurrent DVT/PE
3.0 Р3.5  DVT/PE with lupus anticoagulant
(a lower range may be sufficient)
Mechanical prosthetic heart valves implanted before 1990