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QL vs LP Blocks for Analgesia Following THA

NCT04402437 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 111

Last updated 2022-08-02

No results posted yet for this study

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.

Conditions

  • Surgery

Interventions

PROCEDURE

LP Block

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.

PROCEDURE

QL Block

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.

Sponsors & Collaborators

  • Medical University of South Carolina

    lead OTHER

Principal Investigators

  • Sylvia H Wilson, MD · Medical University of South Carolina

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2020-07-23
Primary Completion
2021-06-04
Completion
2021-06-04

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04402437 on ClinicalTrials.gov