Overview Effect of Esketamine on Anxiety State in Patients Undergoing Abdominal Tumor Surgery Status: COMPLETED Trial end date: 2025-06-30 Target enrollment: Participant gender: Summary To evaluate whether esketamine can relieve anxiety in patients undergoing abdominal tumor surgery.Phase: NA Details Lead Sponsor: Zhejiang Cancer HospitalTreatments: Control GroupsEsketamineSaline Solution