IRCT20181124041746N1 IRCT 2019-01-19 Kermanshah University of Medical Sciences Effect of warfarin and rivaroxaban in coronary endartherectomy Assesment and compair the prognosis of warfarin and rivaroxaban in patient with open heart surgery and endarterectomy 2018-11-22 anticipated 120 Complete https://irct.ir/trial/35542 interventional Randomization: Not randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. 2-3 Condition 1: Coronary arthry disease. Condition 2: . Intervention 1: In one group, patients recieve warfarin (vitamink antagonist)for 3 monthThe dosage of drug was baced on patients INR. Goal INR was 2-3.we check INR frequently to acheive this goal. Intervention 2: In this group patients without chronic kidney diseasd were treated with rivaroxaban(anti xa factor) 15 mg daily for 3month. Dosage of rivaroxaban was fixed and there was not need for check of coagulation state. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is To end the study