At a glance
ClinicalIndex Comparison RecordStandardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.
Comparison of the Effect of Intra-articular Administration of 0.2% Ropivacaine vs. 0.75% Ropivacaine as an Analgesic in the Immediate Postoperative Period of Knee Arthroscopy in Acute Injuries at the ABC Medical Center
In Brief
A Phase 4 clinical trial evaluating Ropivacaine 0.75% Injectable Solution and Ropivacaine 0.2% Injectable Solution for Knee Arthroscopy and Acute Pain. Completed, enrolled 70 participants across 1 site.
Detailed Summary
All patients with acute lesions that attend the orthopedic and trauma center of the ABC medical center are invited to participate in the study. Those that meet the inclusion criteria and later sign an informed consent are randomized to receive 10 ml of a solution with ropivacaine at 0.75% and 0.2% intraarticular for the first 5 minutes after the end of surgery (closing of surgical wounds). Both the patient, the physician who applies it and the evaluator of outcomes remain blinded to the dose of ropivacaine the patient receives. Two hours after the end of the surgery, while the patient is in his room, the presence of pain is evaluated by a visual analog scale (VAS), while the patient is asked to flex and extend his knee. The result is quantified continuously, to later categorize the pain in none to slight pain (0-3 points) and moderate-severe pain (4-10 points). All the information is recorded on established forms in the clinical file (general data), that includes the variables of interest for the study, and is reported by the physicians after standardization of all those in charge with collecting information to comply with the conceptual and operative operationalization of the variables described in the research protocol. In addition to the evaluation of pain, the administration of opioids to patients for necessary reasons (presence of pain) by the physicians in charge is recorded. It is hoped that, in patients with knee arthroscopy for acute lesion, there is a difference in the frequency of moderate-severe pain of 30% in the post-operative (frequency of 37.5% in patients with ropivacaine at 0.2% and frequency of 0.75% in patients with ropivacaine at 0.75%).
Study Details
Timeline
Interventions
The patients receive 10 ml of intraarticular solution in the knee (at the anatomical point at the level of the upper pole of the ball joint, under the iliotibial band), with different content of ropivacaine 0.75%; the vehicle for application presents the same physical appearance for all patients and is applied by previously standardized treating physicians.
The patients receive 10 ml of intraarticular solution in the knee (at the anatomical point at the level of the upper pole of the ball joint, under the iliotibial band), with different content of ropivacaine 0.2%; the vehicle for application presents the same physical appearance for all patients and is applied by previously standardized treating physicians.