ATI RN Comprehensive Exit Exam Related

Review ATI RN Comprehensive Exit Exam related questions and content

A client is receiving heparin therapy. Which of the following laboratory results indicates the client is receiving an effective dose of heparin?

  • A. INR 1.5
  • B. aPTT 60 seconds
  • C. Platelets 150,000/mm³
  • D. Potassium 4.0 mEq/L
Correct Answer: B

Rationale: An aPTT of 60 seconds indicates the client is receiving an effective dose of heparin. The activated partial thromboplastin time (aPTT) measures the time it takes for a clot to form, and a therapeutic range for heparin therapy is usually 1.5 to 2 times the control value, which is around 60-80 seconds. An INR of 1.5 is not related to heparin therapy, as it is commonly used to monitor warfarin therapy. Platelet count and potassium levels are not direct indicators of the effectiveness of heparin therapy.