Geneva, Feb. 13 -- International Clinical Trials Registry received information related to the study (ChiCTR2600118301) titled 'The Effect of Esketamine as an Adjuvant to Ropivacaine on Rebound Pain after Nerve Block in Elderly Patients with Upper Limb Fracture: A Single-Center, Double-Blind, Randomized, Controlled Clinical Trial' on Feb. 4.

Study Type: Interventional study

Study Design: Parallel

Primary Sponsor: Wusheng County People's Hospital

Condition: Rebound Pain

Intervention: S group:Nerve block medications: 0.5 mg/kg esketamine + 0.35% ropivacaine, total volume 20 mL

Recruitment Status: Not Recruiting

Phase: N/A

Date of First Enrollment: 2026-02-20

Target Sample Size: S group:61;L group:61;

Countries of Recruitment...