ATI RN
ATI Pharmacology Quiz 25E Questions
Extract:
Question 1 of 5
A nurse is caring for a client who has a new prescription for warfarin. The nurse should use the results of which of the following diagnostic tests to monitor the effect of this therapy?
Correct Answer: C
Rationale: The correct answer is C: Prothrombin time (PT). PT measures the extrinsic pathway of the clotting cascade, which is specifically affected by warfarin. Monitoring PT allows the nurse to assess the anticoagulant effect of warfarin and adjust the dosage accordingly. White blood cell count (
A), activated partial thromboplastin time (
B), and platelet count (
D) do not directly assess warfarin's anticoagulant effect. WBC count indicates infection or inflammation, aPTT primarily assesses the intrinsic pathway of clotting, and platelet count evaluates platelet function.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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