At a glance
ClinicalIndex Comparison RecordStandardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.
Utilization of Quadratus Lumborum Versus Lumbar Plexus Blocks for Postoperative Analgesia Following Hip Arthroplasty: A Prospective, Randomized Clinical Trial
In Brief
A clinical study evaluating LP Block and QL Block for Surgery. Completed, enrolled 111 participants across 1 site.
Detailed Summary
Purpose: Evaluate difference in postoperative opioid consumption when subjects receive a quadratus lumborum (QL) or lumbar plexus (LP) block preoperatively for total hip arthroplasty (THA). Hypothesis: Preoperative QL and LP blocks will result in similar postoperative opioid consumption following hip arthroplasty.
Study Details
Timeline
Interventions
Subjects randomized to the lumbar plexus block group will receive a subcutaneous lidocaine skin wheal 3-4 cm lateral to midline on the operative side along the intercristal line. A nerve stimulator will be sent to 1-1.5mA and a stimulating needle inserted perpendicular to the skin. The needle will be advanced slowly until the quadriceps muscle is stimulated and maintained at less than 0.6mAs. Ropivacaine (20ml, 0.5%) will be injected slowly with frequent aspiration to rule out inadvertent intravascular needle placement.
Subjects randomized to the quadratus plexus block group will receive a subcutaneous lidocaine skin wheal that will be placed after ultrasound identification of external oblique, internal oblique, transverse abdominus and quadratus lumborum muscles. A needle will then be advanced under ultrasound guidance below the internal oblique aponeurosis and lateral to the quadratus lumborum muscle. Ropivacaine (20ml, 0.5%) will be injected slowly with frequent aspiration to rule out inadvertent intravascular needle placement. Local anesthetic injection will also be observed with real time ultrasound guidance.