Overview Effect on Early Cognition Under Sedation by Rimazole Toluenesulfonate in Old Patient Undergoing Colonoscopy Status: Recruiting Trial end date: 2022-12-30 Target enrollment: Participant gender: Summary To investigate the effect on cognition under sedation by Rimazole toluenesulfonatein elderly patients undergoing colonoscopy Phase: Phase 4 Details Lead Sponsor: RenJi HospitalCollaborator: Shanghai Jiao Tong University School of MedicineTreatments: Propofol