Overview Whether Opioids Are Factor That Induced POD? Status: Completed Trial end date: 2020-12-31 Target enrollment: Participant gender: Summary The purpose of this study was to investigate whether perioperative use of low doses of opioids could reduce postoperative delirium . Phase: N/A Details Lead Sponsor: Zhejiang Cancer HospitalTreatments: DsuviaRopivacaineSufentanil