The nurse is reviewing the lab results of a patient taking warfarin for atrial fibrillation. Which of the following INR values would the nurse consider therapeutic for this patient?



•Normal INR range is 0.9-1.2. Patient's requiring anticoagulation for atrial fibrillation have a target INR range of 2.0-3.0.

•The other options do not fall into the target range of 2.0-3.0.

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