NCLEX-RN (Registered Nurse) Practice Exam · Question
A patient is receiving a continuous intravenous infusion of heparin. Which laboratory value is most critical for the nurse to monitor?
The aPTT measures the intrinsic pathway of coagulation and is used to monitor heparin therapy. PT and INR are used for warfarin monitoring.
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Question: A patient is receiving a continuous intravenous infusion of heparin. Which laboratory value is most critical for the nurse to monitor?
Answer options:
- Prothrombin Time (PT)
- International Normalized Ratio (INR) ✅ Activated Partial Thromboplastin Time (aPTT)
- Bleeding time
Correct answer: Activated Partial Thromboplastin Time (aPTT)
Explanation: The aPTT measures the intrinsic pathway of coagulation and is used to monitor heparin therapy. PT and INR are used for warfarin monitoring.
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