Analgesic Effect of Ropivacaine Combined With Hydromorphone for Subarachnoid Anesthesia After Total Knee Arthroplasty

Conditions: Postoperative Analgesia Interventions: Drug: Hydromorphone was injected into the subarachnoid space Sponsors: Second Hospital of Jilin University Completed
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials