Difficulty: Medium
Average Score: 86%
Simulated
A nurse is providing discharge teaching about warfarin to a client who has deep-vein thrombosis. The nurse should instruct the client to obtain which of the following laboratory tests monthly?
Correct answer
C
Rationale
The correct answer is C: INR. The client on warfarin therapy for deep-vein thrombosis requires regular monitoring of their INR levels to ensure the medication is within the therapeutic range for preventing blood clots. Platelet count (A) assesses clotting ability, aPTT (B) is used for heparin monitoring, and fibrinogen (D) measures clot formation, not warfarin effectiveness. Monthly INR monitoring is crucial to adjust warfarin dosage and prevent complications.