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First received: February 25, 2026

Clinical Trial: Effect of Dexmedetomidine Dosage on Postoperative Delirium in Geriatric Orthopedic Surgery

Study Status: COMPLETED

Recruit Status: COMPLETED

Condition: Delirium - Postoperative

Study Type: INTERVENTIONAL


Official Title: Dose-Effect Relationship of Dexmedetomidine on Delirium and Cognitive Function After Lower Limb Orthopedic Surgeries for Elderly Patients

Brief Summary: This study evaluates the dose-response relationship of Dexmedetomidine (DEX) in reducing the incidence and severity of postoperative delirium (POD) and postoperative cognitive dysfunction (POCD) in elderly patients. The study compares different doses of DEX against a fentanyl control group in patients undergoing major lower limb orthopedic surgery under general anesthesia to determine the optimal dosage for cognitive protection.

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