Difficulty: Medium
Average Score: 90%
Simulated
A nurse is preparing to administer warfarin to a client who has chronic atrial fibrillation. Which of the following laboratory values should the nurse monitor prior to administering the medication?
Correct answer
B
Rationale
INR (International Normalized Ratio) measures clotting time and must be monitored with warfarin to ensure therapeutic anticoagulation and prevent bleeding or clotting complications in atrial fibrillation.