After Hip Replacement Surgery,a Client Receives Two Doses of Enoxaparin

After hip replacement surgery,a client receives two doses of enoxaparin (Lovenox) during the day shift.What orders does the nurse anticipate for the client?

A) Laboratory draw for platelet count
B) Laboratory draw for prothrombin time (PTT)
C) Laboratory draw for international normalized ratio (INR)
D) Order for protamine sulfate
E) Order for vitamin K