You are treating a 44-year-old woman admitted to the hospital for deep vein thrombosis (DVT). As she is being discharged, you recommend treatment with warfarin. However, the patient refuses, citing concerns about frequent blood tests required for monitoring warfarin therapy. She mentions seeing a television commercial about a newer medication that does not require frequent blood monitoring. Using her phone, she finds information about a drug that works by directly inhibiting factor Xa. Which of the following medications fits her description and is appropriate for treating DVT?
