 This is a prospective randomized comparative evaluation of Edoxaban and Warfarin for safety and efficacy in perioperative use in patients with non-valvular atrial fibrillation AF undergoing clinically indicated implantation or replacement of cardiovascular implantable electrical devices.The primary objective is to compare the rates of local and systemic bleeding in subjects randomized to Edoxaban compared to subjects randomized to continuous warfarin in within 30 days of cardiac rhythm device implant with concomitant non-valvular AF. 