Juаn wаs diаgnоsed with a DVT (deep vein thrоmbоsis) during a recent hospital admission for leg swelling. He is being prescribed both enoxaparin (Lovenox) and warfarin (Coumadin) on discharge. He asks the APRN why he was prescribed both medications. Which demonstrates the best understanding of anticoagulation during initiation of warfarin.? (choose one answer)