Geneva, Nov. 2 -- International Clinical Trials Registry received information related to the study (ISRCTN98867030) titled 'Study on the effect of ultrasound-guided nerve block on sleep quality after hip replacement in elderly patients on the basis of patient-controlled analgesia' on Oct. 23.

Study Type: Interventional

Study Design: Allocation: Randomized controlled trial Masking: Blinded (masking used) Control: Placebo Assignment: Parallel Purpose: Treatment

Primary Sponsor: Bengbu First People's Hospital

Condition: Postoperative pain and sleep disorders in elderly patients undergoing total hip arthroplasty Surgery

Intervention: All participants receive standardized general anesthesia: after standard preoperative fasting (solids...