F10 and atrial fibrillation: The indications for anticoagulation with factor Xa inhibitors were as follows: history of atrial fibrillation (n = 30, 69.8%), DVT/PE (n = 9, 20.9%), both atrial fibrillation and DVT/PE (n = 3, 7%), and lower extremity venous bypass graft (n = 1, 2.3%).