NCT02982031

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

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 23 (actual)
• Sponsor: Mahidol University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

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.

Conditions

• Lumbar Plexus Blockade

Interventions

Type	Name	Description
PROCEDURE	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.
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.

Timeline

• Start date: 2016-06-01
• Primary completion: 2016-06-01
• Completion: 2016-09-01
• First posted: 2016-12-05
• Last updated: 2016-12-05

Locations

1 site across 1 country: Thailand