The nurse is teaching a client recovering from a pulmonary embolism who will take warfarin (Coumadin) for several weeks about long-term management of medications. Which statement by the client indicates a need for further teaching? A) "I may use enemas to help with constipation." B) "I should apply an ice pack for 1 hour if I am bumped." C) "I should not have dental work without consulting my provider." D) "I will need weekly lab work to monitor my medication therapy."