Difficulty: Medium
Average Score: 62%
Simulated
A nurse is caring for a client who has atrial fibrillation and is receiving warfarin. Which of the following laboratory results should the nurse report to the provider?
Correct answer
A
Rationale
The correct answer is A: INR 4.5. An INR of 4.5 indicates that the patient's blood is too thin, increasing the risk of bleeding. This result is above the therapeutic range for warfarin therapy (2-3 for most conditions). The nurse should report this to the provider for adjustment of warfarin dosage to reduce the risk of bleeding. Platelet count (B), aPTT (C), and Hemoglobin (D) are within normal ranges and not directly related to warfarin therapy for atrial fibrillation. Reporting these would not be necessary in this case.