HESI Practice Test Pharmacology Related

Review HESI Practice Test Pharmacology related questions and content

A client is receiving heparin to treat a deep vein thrombosis. The nurse should monitor which laboratory result to assist in evaluating the efficacy of the drug?

  • A. Platelet count
  • B. Prothrombin time
  • C. Partial thromboplastin time
  • D. Serum levels of protamine sulfate
Correct Answer: C

Rationale: The nurse should monitor the partial thromboplastin time to evaluate the efficacy of heparin. Partial thromboplastin time reflects the anticoagulant effect of heparin by measuring the intrinsic pathway of coagulation. Platelet count assesses platelet levels and is not specific to heparin efficacy. Prothrombin time is used to monitor warfarin therapy. Serum levels of protamine sulfate are not used to evaluate the efficacy of heparin.