Geneva, Jan. 12 -- International Clinical Trials Registry received information related to the study (ChiCTR2500115156) titled 'Effect of 40Hz Gamma Wave Auditory Stimulation During Surgery on Postoperative Delirium in Elderly Patients Undergoing Major Non-cardiac Surgery: A Prospective, Parallel-Group, Randomized Controlled Tria' on Dec. 23, 2025.

Study Type: Interventional study

Study Design: Parallel

Primary Sponsor: The First Affiliated Hospital of Soochow University

Condition: Postoperative delirium

Intervention: Group A:wear headphones that do not play 40Hz ?-wave sounds after successful induction of anesthesia

Recruitment Status: Not Recruiting

Phase: N/A

Date of First Enrollment: 2025-12-23

Target Sample Size: Group ...