A nurse is caring for a client who has a pulmonary embolism and has been on a heparin continuous infusion for 5 days. The provider prescribes warfarin PO without discontinuing the heparin. The client asks the nurse why both anticoagulants are necessary. Which of the following statements should the nurse make?

A Both heparin and warfarin work together to dissolve the clots. D I will call the provider to get a prescription for discontinuing the IV heparin today. C The IV heparin increases the effects of the warfarin and decreases the length of your hospital stay. B Warfarin takes several days to work, so the IV heparin will be used until the warfarin reaches a therapeutic level.