a Patient had a surgical procedure in April for which his warfarin was discontinued for five days. b During this visit, the patient was prescribed prednisone 10 mg orally daily and his warfarin ...

Conclusion Warfarin dosages required to maintain a goal INR of 2.0–3.0 were relatively stable in the four weeks before and after procedures to convert atrial fibrillation or flutter to sinus rhythm.

To get the correct warfarin dose, patients have to have their INR tested. INR—international normalized ratio test—is a common blood test that determines how quickly your blood clots.