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OpenTrials
Completed

NCT Number: NCT05760963

Which Approach to Favor for Ultrasound-guided Lumbar Plexus Block (BPLE). Comparative Study.

Lumbar plexus block is described as a difficult block, thus requiring experienced practitioners. Many techniques have been used to date, notably anatomical landmarks, neurostimulation, and ultrasound-guided techniques. Among ultrasound-guided techniques, the "Trident" technique was described in 2006, while the "Shamrock" technique was described in 2013. Trident consists in putting the probe sagittally next to the lumbar spine and injecting local anesthetic around the lumbar plexus inside the psoas muscle at the level of L4. It is an out-of-plane puncture.

Shamrock puts the probe transversely on the iliac crest. Authors of the 2013 article said the image obtained with this technique was an image of L4. This technique allows an in-plane puncture, which is a safe technique.

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Key information

Conditions

Volunteers

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

CHU Saint-Etienne

Saint-Etienne, France

About this study

This study aims at describing the level obtained with Shamrock, as well as at comparing depth of lumbar plexus, image quality and presence of vessels between the two techniques.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adult with indication of lumbar echography

Exclusion criteria

  • Antecedent of spine surgery or spinal malformation

Treatment and study plan

Collection of datas

Other

Analysis lumbar echographies results by Trident ans Shamrock techniques.

Costiform processes on T12 to L5 were spotted and noted. For Trident technique, quality of image, depth of lumbar plexus and presence of vessels were noted.

Shamrock technique was performed, the projection of C line (line obtained with a probe put on the iliac crest) was noted with the invisible ink pen. Then the probe was oriented cephalically (for line >C) and caudally (line <C). For each lines, quality of image, depth of lumbar plexus and presence of vessels were also noted.

The projections of C, >C, <C on the costiform processes were noted.

Primary outcomes

  1. Projection of line C on the costiform processes

    Time frame: Day: 0

    Analysis by trident techniques results.

Secondary outcomes

  1. Depth of lumbar plexus

    Time frame: Day: 0

    Analysis by trident and shamrock techniques results.

  2. image quality

    Time frame: Day: 0

    Analysis by trident and shamrock techniques results.

  3. presence of vessels

    Time frame: Day: 0

    Analysis by trident and shamrock techniques results.

Sponsors and collaborators

Lead sponsor

Centre Hospitalier Universitaire de Saint Etienne

Other

Registry information

Important dates

Study start
2019
Primary completion
2019
Study completion
2019
First posted
Mar 9, 2023
Registry last updated
Mar 9, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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