Overview RIvaroxaban for Valvular Heart diseasE and atRial Fibrillation Trial -RIVER Trial Status: Unknown status Trial end date: 2019-12-01 Target enrollment: Participant gender: Summary RIvaroxaban for Valvular heart diseasE and atRial fibrillation trial (RIVER trial). Phase: Phase 2 Details Lead Sponsor: Hospital do CoracaoTreatments: RivaroxabanWarfarin