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Warfarin and INR Testing USMLE high yield by Dr.Mirza Adnan

The Risk of Bleeding increases with an increase in the INR

Correction of excess anticoagulation is dependent upon the INR value and the presence of clinically significant bleeding

INR < 5, no significant bleeding   --> omit next warfarin dose
INR 5-9, no significant bleeding   --> stop warfarin temporarily
INR > 9  --> stop warfarin, give oral vitamin K