RT Journal Article SR Electronic A1 Rizzo, Toni T1 Safety and Efficacy of Anticoagulants JF MD Conference Express YR 2012 FD SAGE Publications VO 12 IS 6 SP 19 OP 20 DO 10.1177/155989771206013 UL http://mdc.sagepub.com/content/12/6/19.abstract AB Apixaban is an oral factor Xa inhibitor with prompt onset and offset of anticoagulation, twice-a-day dosing, and no need for coagulation monitoring. This article discusses the efficacy and safety of apixaban compared with warfarin in ARISTOTLE trial, and with aspirin in AVERROES Trial. This article also discusses the challenge of choosing anticoagulation therapy for patients with AF using the RE-LY, ROCKET, ARISTOTLE, and ENGAGE AF-TIMI 48 as examples.