A Comparison of Visualization Between Shamrock Technique and Paramedian Transverse Scan in Lumbar Plexus Blockade

Not Applicable

Completed

• Conditions: Lumbar Plexus Blockade
• Interventions: Procedure: shamrock; Procedure: paramedian transverse scan

• Registration Number: NCT02982031
• Lead Sponsor: Mahidol University

Brief Summary

The primary objective of this study was to compare ultrasound visibility of the lumbar plexus at the intertransverse space between paramedian transverse scan and shamrock technique. Moreover obtaining a clear image of relevant structures is imperative. Thus, the secondary objective was to assess ultrasound visibility of each relevant structure and overall visibility between these two methods.

Detailed Description

Background: Ultrasound-guided lumbar plexus block (USG LPB) is regarded as a form of advanced ultrasound-guided regional anesthesia (USGRA). One of the key challenges of USG LPB is visualization of the lumbar plexus. That are currently in use for ultrasound-guided lumbar plexus blockade - paramedian transverse scan (PMTS) and shamrock technique.

Method: Twenty-three healthy adult volunteers aged ≥ 18 years were enrolled in this prospective cohort study. Ultrasound visualization results were compared between methods.

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study Start: 2016-06
• Primary Completion: 2016-06
• Study Completion: 2016-09
• Study First Submitted: 2016-09-18
• Status Verified: 2016-12
• Study First Submitted QC: 2016-12-01
• Last Update Submitted: 2016-12-01
• Study First Posted: 2016-12-05
• Last Update Posted: 2016-12-05

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 23

Inclusion Criteria

• healthy volunteer, age >/= 18

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Exclusion Criteria

• spinal deformity and history of previous back or spine surgery

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
shamrock	shamrock	shamrock: both left and right sided scan,both intertransverse and transverse process window
paramedian transverse scan	paramedian transverse scan	paramedian transverse scan (PMTS): both left and right, both intertransverse and transverse process window

Primary Outcome Measures

Name	Time	Method
Percentage of Video (VDO) loops visualization of lumbar plexus	1 month	Percentage of Video (VDO) loops visualization of lumbar plexus comparing between two techniques

Secondary Outcome Measures

Name	Time	Method
Ultrasound visibility score of each relevant structures	1 month	10 structures: Erector spinae muscle, Quadratus lumborum muscle, Psoas muscle, Vertebral body, Inferior vena cava, Articular process of the lumbar vertebra, Lumbar paravertebral space, lumbar nerve root, Lumbar plexus nerve, Psoas compartment Using 4-point Likert scale (0, not visible; 1, hardly visible; 2, well visible; 3, very well visible)
Overall ultrasound visibility score of 10 structures	1 month	Sum of ultrasound visibility score of 10 relevant structures: Erector spinae muscle, Quadratus lumborum muscle, Psoas muscle, Vertebral body, Inferior vena cava, Articular process of the lumbar vertebra, Lumbar paravertebral space, lumbar nerve root, Lumbar plexus nerve, Psoas compartment

Trial Locations

Locations (1)

Siriraj hospital; 🇹🇭 Bangkok, Thailand