Exam 8: Pharmacology

The clinic nurse reviews the medical record of a client who was prescribed etanercept, a tumor necrosis factor (TNF) inhibitor.  Which test result is most important for the nurse to check before initiating this treatment?

The nurse provides teaching about methotrexate to a client with rheumatoid arthritis.  It is most important to address which topic regarding this drug?

A client with unstable angina and chronic kidney disease is receiving a continuous infusion of unfractionated heparin.  Which value for activated partial thromboplastin time (aPTT) would indicate to the nurse that the heparin therapy is at an optimal therapeutic level?