A nurse is caring for a client who has deep vein thrombosis (DVT). The client has received intravenous (IV) heparin for the past 5 days and now has a new prescription for oral warfarin in addition to the heparin. The client asks the nurse if both medications are necessary. Which of the following is an appropriate response by the nurse?

D "Heparin will be continued until the warfarin reaches a therapeutic level." C "I will ask the charge nurse to call your provider and get an explanation." B "Heparin enhances the effects of the warfarin." A "Both heparin and warfarin work together to dissolve the clots."