Geneva, April 20 -- International Clinical Trials Registry received information related to the study (ChiCTR2600122039) titled 'Effects of Opioid-Sparing Strategy with Subanesthetic Dose of Esketamine on Postoperative Sleep Quality and Gastrointestinal Function in Elderly Patients Undergoing Gastrointestinal Tumor Surgery' on April 8.

Study Type: Interventional study

Study Design: Parallel

Primary Sponsor: Shanxi Bethune Hospital

Condition: Gastrointestinal Tumor Surgery

Intervention: Esketamine Group:During anesthesia maintenance, esketamine was administered intravenously at a dose of 0.1 mg/(kg·h).

Recruitment Status: Not Recruiting

Phase: 0

Date of First Enrollment: 2026-04-15

Target Sample Size: Esketamine Group:40...