ATI RN Comprehensive Exit Exam Related

Review ATI RN Comprehensive Exit Exam related questions and content

Which of the following lab values indicates a patient on warfarin is at a therapeutic level?

  • A. INR of 1.1
  • B. PT of 12 seconds
  • C. INR of 2.5
  • D. Platelet count of 150,000
Correct Answer: C

Rationale: An INR of 2.5 indicates a therapeutic level for a patient on warfarin. The INR (International Normalized Ratio) is the most accurate way to monitor and adjust warfarin doses. An INR of 1.1 (Choice A) is below the therapeutic range, indicating a need for an increased dose. PT (Prothrombin Time) of 12 seconds (Choice B) is not specific for warfarin therapy monitoring. Platelet count (Choice D) is not directly related to monitoring warfarin therapy.