Geneva, April 28 -- International Clinical Trials Registry received information related to the study (ChiCTR2600122404) titled 'The effect of preoperative night dexmedetomidine nasal spray on postoperative delirium in elderly patients undergoing hip replacement' on April 13.

Study Type: Interventional study

Study Design: Parallel

Primary Sponsor: The First Affiliated Hospital of Dalian Medical University

Condition: Postoperative delirium

Intervention: Control group:At 20:00 the day before surgery, administer saline nasal spray, one spray in each nostril.

Recruitment Status: Not Recruiting

Phase: 4

Date of First Enrollment: 2026-04-13

Target Sample Size: Control group:107;Research group:107;

Countries of Recruitment: China...