Geneva, Jan. 12 -- International Clinical Trials Registry received information related to the study (ChiCTR2500115004) titled 'The Effect of Timing of Subanesthetic Dose Esketamine Administration on Emergence Agitation in Patients Undergoing Endoscopic Nasal Surgery: A Single-Center Randomized Controlled Study' on Dec. 19, 2025.

Study Type: Interventional study

Study Design: Parallel

Primary Sponsor: The First Affiliated Hospital of Shan Tou University Medical College

Condition: Emergence Agitation (EA)

Intervention: The control group (Group C):Received an equal volume of saline before induction and 20 min before the end of surgery. The group receiving medication before induction (Group E1):Received 0.25 mg/kg esketamine before i...