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

NCT ID: NCT02982031

Last Updated: 2016-12-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

23 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-06-30

Study Completion Date

2016-09-30

Brief Summary

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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

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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.

Conditions

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Lumbar Plexus Blockade

Keywords

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Ultrasound-guided lumbar plexus blockade Shamrock technique Paramedian transverse scan USG LPB USGRA

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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shamrock

shamrock: both left and right sided scan,both intertransverse and transverse process window

Group Type SHAM_COMPARATOR

shamrock

Intervention Type PROCEDURE

This scanning technique is performed in the lateral decubitus position with the side of interest facing upwards. The transducer is placed in the transverse plane on the flank of the patient cranially to the iliac crest. The quadratus lumborum muscle is identified medial to the aponeurosis of the transversus abdominis muscle. With the psoas muscle anterior to the transverse process, the erector spinae muscle posterior to the transverse process, and the quadratus lumborum muscle attached to the apex of the transverse process of L4.

paramedian transverse scan

paramedian transverse scan (PMTS): both left and right, both intertransverse and transverse process window

Group Type ACTIVE_COMPARATOR

paramedian transverse scan

Intervention Type PROCEDURE

The ultrasound transducer is positioned 4 cm lateral to the midline along the intercristal line and just above the iliac crest. The transducer is also directed slightly medially.

Interventions

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shamrock

This scanning technique is performed in the lateral decubitus position with the side of interest facing upwards. The transducer is placed in the transverse plane on the flank of the patient cranially to the iliac crest. The quadratus lumborum muscle is identified medial to the aponeurosis of the transversus abdominis muscle. With the psoas muscle anterior to the transverse process, the erector spinae muscle posterior to the transverse process, and the quadratus lumborum muscle attached to the apex of the transverse process of L4.

Intervention Type PROCEDURE

paramedian transverse scan

The ultrasound transducer is positioned 4 cm lateral to the midline along the intercristal line and just above the iliac crest. The transducer is also directed slightly medially.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* healthy volunteer, age \>/= 18

Exclusion Criteria

* spinal deformity and history of previous back or spine surgery
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Mahidol University

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Pawinee Pawinee, M.D

Role: PRINCIPAL_INVESTIGATOR

66864001721

Locations

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Siriraj hospital

Bangkok, Bangkok, Thailand

Site Status

Countries

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Thailand

Other Identifiers

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302/2559(EC4)

Identifier Type: -

Identifier Source: org_study_id